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UGREEN 90748 CM596 Bluetooth 5.3 AUX Receiver, 15H

Rs. 2,399.00 Rs. 4,999.00
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Seamless Pairing
Crystal Sound
Long Battery
Hands-Free Calls
Noise Cancelling
CM596 • RECEIVER ONLY • 15-HOUR BATTERY

UGREEN 90748 CM596 Bluetooth 5.3 AUX Receiver, 15H

Overview

UGREEN 90748 is a rechargeable receiver that adds Bluetooth music and hands-free calling to a car stereo, powered speaker or home audio system with a 3.5mm AUX input. This shopper guide reconciles the exact live media with UGREEN-owned sources so direction, version, codec, call, battery and compatibility claims stay revision-specific.

Bluetooth 5.3SKU 90748CM596Receiver only
UGREEN 90748 UGREEN CM596 receiver product view
UGREEN CM596 receiver product view

Key features

Exact role

a rechargeable receiver that adds Bluetooth music and hands-free calling to a car stereo, powered speaker or home audio system with a 3.5mm AUX input.

Audio path

A phone, tablet or computer is the Bluetooth source. SKU 90748 receives that programme audio and sends it from its 3.5mm plug or supplied cable into an AUX input. It cannot transmit television or seat-screen audio to Bluetooth headphones.

Codec boundary

Exact live artwork identifies SBC and AAC. It explicitly says aptX is not supported; LDAC, LC3 and lossless Bluetooth are also not claimed.

Power design

Up to 15 hours of music/calls and about 200 hours standby are shown in exact media, measured under UGREEN conditions. Volume, calls, age, temperature and signal strength affect results. USB-C charging; about 2 hours is the listed full-charge time. This is a battery-powered receiver, not a permanently bus-powered USB audio interface.

Audio direction and connector roles

A phone, tablet or computer is the Bluetooth source. SKU 90748 receives that programme audio and sends it from its 3.5mm plug or supplied cable into an AUX input. It cannot transmit television or seat-screen audio to Bluetooth headphones.

Connector rule: a source/output must feed a destination/input. USB power, USB host data, analogue AUX and Bluetooth radio roles are separate even when one enclosure handles several of them.

Start safely: set the correct mode, select the target input and lower every volume control before testing.

UGREEN 90748 Two supported 3.5mm connection arrangements
Two supported 3.5mm connection arrangements

Sound, codecs, calls and latency

Codecs

Exact live artwork identifies SBC and AAC. It explicitly says aptX is not supported; LDAC, LC3 and lossless Bluetooth are also not claimed.

Latency

No millisecond latency figure or gaming mode is verified. Bluetooth delay varies with the source, codec, application and radio conditions.

Microphone and calls

A built-in microphone supports hands-free calls. Exact media describes DSP processing that reduces environmental noise for clearer speech; it does not make the cabin silent and is not listening ANC.

Real-world fidelity

Source file, negotiated codec, radio conditions, analogue cable, amplifier and speakers/headphones all affect the result. A newer Bluetooth number is not automatically higher sound quality.

UGREEN 90748 DSP call-noise processing artwork
DSP call-noise processing artwork

Use scenarios

Scenario 1

Adding wireless music and calls to an older car AUX system.

Scenario 2

Streaming from a phone to a powered speaker with a 3.5mm input.

Scenario 3

Portable home-stereo reception without leaving USB power connected.

Scenario 4

Shared-car use with two paired phones and one active programme.

Scenario 5

Navigation prompts and podcasts while controls are set before driving.

UGREEN 90748 Car music use scenario
Car music use scenario

Setup and usability guidance

  1. Step 1: Charge the receiver before first use.
  2. Step 2: Connect its 3.5mm output to the target AUX input and select that input on the stereo.
  3. Step 3: Power on SKU 90748 and open the source Bluetooth menu.
  4. Step 4: Select the UGREEN/CM596 receiver entry and test at low volume.
  5. Step 5: For a second source, pause the first device, then pair the second according to the manual.

Usability rule: establish one clean path first. Add a second source, listener, output or peripheral only after the first works reliably.

Controls

The multifunction and side controls handle power, pairing, supported playback, volume/track functions and calls. Use the CM596 manual for exact press timing.

Second-device behaviour

Two Bluetooth source devices can remain connected. Only one programme should play at a time; pause the first source before starting the second.

Recovery

If reconnection fails, disconnect the second source, forget the receiver on both hosts, power-cycle the unit and pair one host again at close range. Use only the CM596 reset timing in the supplied manual.

UGREEN 90748 Two-source pairing behaviour
Two-source pairing behaviour

Compatible devices and systems

Verified class: Bluetooth-audio phones, tablets and computers as sources; car stereos, powered speakers, amplifiers and home audio equipment with a 3.5mm AUX input as destinations.

  • Match the operating-system/audio profile and connector role, not only the Bluetooth logo.
  • Confirm whether you need programme audio, microphone return, peripheral data or file transfer; these use different profiles.
  • For AUX/RCA products, confirm the destination is a line-level input and already has its own amplifier.
  • For PC adapters, verify driver requirements and disable a competing built-in Bluetooth radio.
  • For two-way products, confirm that the chosen TX or RX mode matches the wired device.
UGREEN 90748 Compact 60 × 35mm portable form
Compact 60 × 35mm portable form

What this product does

  • Receives Bluetooth audio from a compatible source.
  • Outputs analogue audio to the stated 3.5mm and/or RCA line input.
  • Supports only the call, control and source-count behaviour documented for this revision.
  • Reconnects to a saved compatible source when powered and available.
  • Modernises existing audio equipment without replacing its amplifier or speakers.

What this product does not do

  • receiver only; no Bluetooth-headphone transmission, aptX, LDAC, optical/RCA output, USB data audio or verified water rating; not for speaker-level or microphone-only sockets.
  • Does not guarantee uninterrupted wireless service through metal, walls, crowds or heavy 2.4GHz interference.
  • Does not repair a damaged source, USB port, AUX socket, amplifier or speaker.
  • Does not make a connector compatible merely because it fits physically.
  • Does not prove ANC, aptX, LDAC, multipoint or microphone return from the Bluetooth version number alone.

What to do

Check the label

Confirm SKU, model and stored revision on the product or box before relying on a specification.

Begin with one endpoint

Pair and test one path before adding any supported second device or output.

Lower volume first

Protect hearing and speakers when changing mode, output, codec, call profile or device.

Keep connections dry

Inspect USB and audio plugs, remove debris without metal tools and dry completely before power.

Use official drivers/manuals

Use the exact CM/BT model instructions; related UGREEN revisions can use different buttons and radios.

Pause before switching

When two sources are connected, pause the current programme before starting the other.

What not to do

Do not infer features

Bluetooth 5.x/6.0 alone does not establish codec, ANC, microphone, multipoint or delay.

Do not force plugs

Stop if a connector does not align; check port type, direction, damage and case clearance.

Do not use speaker-level output

AUX/RCA receiver inputs are line-level; passive speakers still need an amplifier.

Do not pair while moving

Configure car and aircraft audio before movement and follow local/crew instructions.

Do not charge damaged cells

Stop for swelling, leakage, odour or abnormal heat and seek proper battery disposal.

Do not borrow reset timing

Sibling models and revisions often use different hold durations and indicators.

Battery, charging and realistic runtime

Battery/power: Up to 15 hours of music/calls and about 200 hours standby are shown in exact media, measured under UGREEN conditions. Volume, calls, age, temperature and signal strength affect results.

Charging/connection: USB-C charging; about 2 hours is the listed full-charge time. This is a battery-powered receiver, not a permanently bus-powered USB audio interface.

  • Published runtime is normally a controlled maximum; volume, calls, codec, temperature, range and battery age can shorten it.
  • USB-powered models have no reserve runtime and stop when vehicle/computer power stops.
  • Use compliant, undamaged power sources and disconnect any product that becomes unusually hot.
  • Do not leave rechargeable products empty for months; follow the exact manual for long-term storage.
UGREEN 90748 Up to 15-hour battery and USB-C charging guide
Up to 15-hour battery and USB-C charging guide

Warnings and limitations

  • Hearing: begin at low volume, limit exposure and stop if you notice discomfort or ringing. Bluetooth features and noise processing are not hearing protection.
  • Battery: never crush, puncture, short, burn or charge a swollen, leaking, wet or unusually hot rechargeable product. USB-powered models still require a sound, compliant 5V source.
  • Aircraft: follow crew instructions, use only permitted headphone outputs and keep wireless devices off whenever directed. Carry lithium products in accordance with airline rules.
  • Driving: pair, mount, select sources and set volume while parked. Hands-free calling does not remove attention or legal responsibilities.
  • Water: no exact product here has a verified IP rating. Keep adapters, plugs and charging ports dry; never connect power while damp.
  • Heat and storage: do not leave the product on a hot dashboard, near a heater or in direct sun. Keep small adapters and cables away from children and pets.
  • Audio ports: connect only to the stated headphone/AUX line-level role. Never connect a 3.5mm/RCA port to mains, passive-speaker output or an unknown industrial signal.

Troubleshooting and reset

No pairing

Bring devices close, verify power/mode, disconnect competing saved devices and pair one endpoint first.

Connected but silent

Check source playback, OS output, TX/RX direction, AUX input selection, cable seating and both volume controls.

Audio but no microphone

A built-in microphone supports hands-free calls. Exact media describes DSP processing that reduces environmental noise for clearer speech; it does not make the cabin silent and is not listening ANC. Confirm the call app input and permissions only where a microphone path is documented.

Drop-outs

Reduce distance and metal/body obstruction, move from crowded 2.4GHz radios and test one connection at a time.

Delay

Compare with a wired path; no unstated codec or Bluetooth version can remove all source and endpoint buffering.

Exact reset path

If reconnection fails, disconnect the second source, forget the receiver on both hosts, power-cycle the unit and pair one host again at close range. Use only the CM596 reset timing in the supplied manual.

Technical specifications

Product / model UGREEN Bluetooth car audio receiver / CM596
SKU / colour 90748 / black
Bluetooth version 5.3
Wireless role Receiver only
Codecs SBC and AAC; no aptX
Wired audio 3.5mm AUX output
Microphone Built in for supported hands-free calls
Simultaneous sources Two connected; one programme at a time
Runtime Up to 15 hours under stated conditions
Standby About 200 hours shown in exact media
Charging USB-C; about 2 hours
Dimensions Approximately 60 × 35mm shown in exact media

Listed ranges and runtimes are qualified maxima in suitable conditions, not universal guarantees.

Package contents

Package: Bluetooth receiver, 3.5mm audio cable, USB charging cable and documentation, as shown/listed for exact SKU 90748.

Pre-purchase checklist

  • Confirm the exact SKU/revision on the sealed product.
  • Confirm TX, RX or Windows-host direction.
  • Confirm every wired input/output and required power source.
  • Confirm call/microphone, codec and second-device needs separately.
  • Check whether any cable, charger or flight adapter you require is actually listed.

Product-specific FAQ

What exactly is UGREEN 90748?

It is a rechargeable receiver that adds Bluetooth music and hands-free calling to a car stereo, powered speaker or home audio system with a 3.5mm AUX input.

What does this receiver connect to?

A phone, tablet or computer is the Bluetooth source. SKU 90748 receives that programme audio and sends it from its 3.5mm plug or supplied cable into an AUX input. It cannot transmit television or seat-screen audio to Bluetooth headphones.

Which codecs does SKU 90748 support?

Exact live artwork identifies SBC and AAC. It explicitly says aptX is not supported; LDAC, LC3 and lossless Bluetooth are also not claimed.

Is low latency guaranteed?

No millisecond latency figure or gaming mode is verified. Bluetooth delay varies with the source, codec, application and radio conditions.

Do microphone and calls work?

A built-in microphone supports hands-free calls. Exact media describes DSP processing that reduces environmental noise for clearer speech; it does not make the cabin silent and is not listening ANC.

Can two phones or outputs be used?

Two Bluetooth source devices can remain connected. Only one programme should play at a time; pause the first source before starting the second.

What battery life or power does it use?

Up to 15 hours of music/calls and about 200 hours standby are shown in exact media, measured under UGREEN conditions. Volume, calls, age, temperature and signal strength affect results. USB-C charging; about 2 hours is the listed full-charge time. This is a battery-powered receiver, not a permanently bus-powered USB audio interface.

Which devices and systems are compatible?

Bluetooth-audio phones, tablets and computers as sources; car stereos, powered speakers, amplifiers and home audio equipment with a 3.5mm AUX input as destinations.

What should I do if pairing fails?

If reconnection fails, disconnect the second source, forget the receiver on both hosts, power-cycle the unit and pair one host again at close range. Use only the CM596 reset timing in the supplied manual.

What is in the package?

Bluetooth receiver, 3.5mm audio cable, USB charging cable and documentation, as shown/listed for exact SKU 90748

What should it not be used for?

receiver only; no Bluetooth-headphone transmission, aptX, LDAC, optical/RCA output, USB data audio or verified water rating; not for speaker-level or microphone-only sockets.

Exact-SKU research and media reconciliation

Research method: exact live Shopify status, description and every stored image were compared with exact-SKU UGREEN regional pages, UGREEN manuals/support and model mappings. Sibling and later-revision features were excluded when they conflicted.

Media decision: Exact live artwork confirms Bluetooth 5.3, receiver-only direction, SBC/AAC, built-in microphone, two-source pairing, 15-hour runtime, two-hour USB-C charging and 3.5mm connection. The old live title’s Bluetooth 5.4 wording was rejected.

Source records: UGREEN source 1 · UGREEN source 2

UGREEN 90748 Receiver and supplied-cable package view
Receiver and supplied-cable package view

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