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Small square black plastic Bluetooth adapter with 3.5mm aux port and control buttons

Auto Ventshade J33 Bluetooth 5.3 Car Adapter 16H 3.5mm

SKU CH-P1EC-039YM

Turns any 3.5 mm aux input into a Bluetooth 5.3 receiver with 16-hour battery, built-in mic for hands-free calls and dual-device pairing up to 33 ft

  • Screen sizeModern
  • Labor warranty1 Year
  • Adjustable subsonic filterBuilt-In Microphone, Fast Charging, Hands-Free Calls, 3.5 mm
  • Cable typeRCA, Female-to-Female
  • Audio channelsStereo
  • Electrical ratingModern, 5 V DC
  • Bluetooth 5.3 gives a stable link up to 33ft
  • Built-in mic enables hands-free calls with one-touch control
  • Dual pairing lets two devices stay connected at once
  • 16-hour battery life keeps music playing all day
  • Fast charge restores full power in 1.5 hours

What this adapter does

The Auto Ventshade J33 adds Bluetooth 5.3 wireless audio to any device with a 3.5mm aux input. It pairs with smartphones, tablets or laptops and streams music or calls through car stereos, home speakers or wired headphones. A built-in microphone enables hands-free calling with one-button answer, reject and redial. Two devices can stay connected at once so incoming calls do not interrupt playback.

Battery life and charging

The internal lithium-ion cell delivers up to 16 hours of continuous use on a full charge. Fast charging replenishes the battery in roughly 1.5 hours from a 5 V USB source. Bluetooth 5.3 maintains a stable link up to 33 ft without obstacles and automatically reconnects to the last paired device when powered on.

Physical design and connections

The unit measures 1.6 x 1.6 x .4 inches and weighs .5 ounces, making it small enough to leave plugged into a console or headphone jack permanently. A 3.5 mm audio cable and an RCA female-to-female cable are included for flexible hookup. Touch controls on the housing handle volume, playback and call functions without a separate remote.

How it compares

Measured against everything we stock in Car Audio Accessories & Wiring, at today’s prices. Recalculated every night.

Price $27.99
Pricier than about 61% of the 2,768 comparable items (median $21.99).

Specifications

Product
Brand nameAuto Ventshade
Model nameJ33
Product typeCar
Product colorBlack
Display
Screen sizeModern
Audio & video
Audio channelsStereo
Audio inputs3.5 mm audio cable
Ports & slots
Cable typeRCA, Female-to-Female
Power
Electrical ratingModern, 5 V DC
Power detailsBattery Powered
Rated voltage5 V DC
Size & build
Overall height1.6 L x 1.6 W x 0.4 H inches
Overall width1.6 L x 1.6 W x 0.4 H inches
Overall length1.6 L x 1.6 W x 0.4 H inches
Product weight0.5 oz
Main materialPlastic
Size or dimensions1.6 in × 1.6 in × 0.4 in
Compatibility
Compatible withSmartphone, Headphones, Speakers
Vehicle manufacturer compatibilitySpeakers
In the box
Included hardwareFalse, true
More details
Adjustable subsonic filterBuilt-In Microphone, Fast Charging, Hands-Free Calls, 3.5 mm aux
Cut out diameterSmall
Inner hole diameter for wireSmall
Number of links to amplifier1
Team affiliation1 Piece

Questions about this item

Does the Auto Ventshade J33 adapter get warm or drain its battery quickly during a full day of driving?

The built-in lithium-ion cell delivers up to 16 hours of continuous playback and recharges in 1.5 hours, so it stays cool and lasts through long trips without needing a mid-day top-up.

My car stereo only has a 3.5 mm aux input — is that the only connection I need to start streaming?

Yes, the J33 plugs directly into any 3.5 mm aux jack and pairs wirelessly via Bluetooth 5.3; no extra cables, adapters or power leads are required beyond the USB charging cable used between drives.

Will the J33 stay paired with my phone if I also keep a second Bluetooth device connected at the same time?

The adapter supports dual connection, allowing two devices to remain linked simultaneously so incoming calls on either phone come through without manual re-pairing.

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