With B04 Bluetooth 5.4 Adapter, you can easily upgrade any old car, motorcycle, home speaker or wired headphone to wireless Bluetooth audio in minutes. No more messy tangled AUX cables, plug and play for daily music, navigation and hands-free calling. Featured with 180° rotatable plug, it fits perfectly into hidden or narrow car AUX ports, lays flush without sticking out and will not block surrounding interfaces, compact and keeps your car interior neat. Adopted upgraded Bluetooth 5.4 chip, it delivers reliable signal and strong anti-interference performance, maintaining steady connection in complex vehicle environments without unexpected audio dropouts. After initial pairing, it auto reconnects automatically when powered on, saving you from repeated manual connection every time. Built-in multi-function control button supports play/pause, switch tracks, adjust volume and answer/end calls directly, no need to pick up your phone while driving for safer travel. The built-in microphone enables smooth hands-free call experience for daily commute and road trips. Equipped with long-lasting battery and Type-C charging port, it supports long time use and convenient power supply, meeting your daily and long-distance travel needs. Q&A You May Concern Q1: Does it work for old cars without built-in Bluetooth? A1: Yes, it works with all devices with 3.5mm AUX input, perfect for old cars, motorcycles, home stereos and wired headphones. Q2: Will it automatically reconnect after power off and restart? A2: Yes, after the first successful pairing, it will auto reconnect to your phone once powered on. Q3: Can I control music and calls directly on this adapter? A3: Sure, the multi-function button allows you to switch songs, adjust volume, play/pause and answer/hang up calls easily. Q4: Does it support noise cancellation? A4: It comes with built-in mic for clear daily calls, no extra noise cancellation function, real and true without false publicity. Q5: Is the plug suitable for crowded car AUX ports? A5: The 180° rotatable design fits narrow & hidden AUX ports perfectly without blocking other ports.
[Instant Wireless Upgrade for Old Devices]: Easily turn old non-Bluetooth car, wired headphones, and home speakers into wireless audio devices. No more messy tangled cables, plug and play for music, navigation and hands-free calls
[180° Rotatable 3.5mm AUX Jack]: Crafted with a premium aluminum alloy casing, flexible bendable design fits hidden & narrow car AUX ports perfectly. it lays flat against the console without sticking out, keeping your setup neat and space-saving
[Bluetooth 5.4 Strong Anti-Interference Connection]: Upgraded Bluetooth 5.4 chip ensures steady signal transmission and great anti-interference performance, staying connected steadily in complex vehicle environment without sudden disconnection or audio dropout
[Built-in Mic for Clear Calls]: Equipped with high-sensitive built microphone for crystal clear hands-free talking. Keep your hands on the wheel and drive safely while answering calls
[16H+ Battery & Type-C Fast Charge]: Long-lasting battery supports all-day commute and road trips. Type-C fast charging allows using while charging
[Auto Reconnect & Multi-Function Control]: After initial pairing, the device automatically reconnects to your phone once powered on. The integrated multi-function button allows you to play/pause music, switch tracks, adjust volume, and answer/end calls directly—no need to pick up your phone, making your driving safer and more convenient
[Worry-Free After-Sales Service]: We offer responsive customer support for all users. Any product or usage issues will get quick reply and proper solution, shop with total confidence