USB Wifi Dongle -3.5 Mm Wireless Bluetooth Jack Audio Receiver Speaker Headphone Black Highlights generic brand 3.5 Mm Wireless Bluetooth Jack Audio Receiver Speaker Headphone Black Description: Powerful Bluetooth IC, compatibility more strong, support A2DP V1.2 stereo profile. Clip Design: Mini size with clip design, portable feature can let you carry them anywhere you want. Standard 3.5mm Plug: Metal material, detachable two-way male to male 3.5mm audio connector, compact and easy to carry. Built-in microphone: support Bluetooth hands-free calling Widely used: Suitable for mobile TV, TV box, MP3, MP4, loudspeaker, Bluetooth headset, laptop, phone speaker car and other devices with 3.5mm audio jacks. How to use: System status: Power on/off: long press MFB for 3 seconds Volume up: short press VOL+ Volume down: short press VOL- Switch language: double click MFB in pairing status Music control: Play/Pause: Short press MFB Previous song: VOL - long press for 2 seconds Next song: VOL + long press for 2 seconds Phone control: Answer call: short press MFB when playing call Refuse to answer the phone: press MFB when calling Reminder: double click MFB button, then short press MFB to cancel dialing Led light shows: Boot pairing: red and blue lights flash alternately Status connection: blue light flashes slowly (5 seconds 1 time) Low voltage: red light flashes (0.5 seconds 1 time) specification: Type: Bluetooth audio receiver Material: plastic Quantity: 1 pc Bluetooth version: 5.0 Range of frequencies: 2.4GHz Profile: A2DP Transmission range: up to 10m/33ft I/O: 3.5mm female jack, mini USB female port Power supply: DC 5V Charging time: about 30mins Working time : about 4h Size: 1.4 * 1.5 * 5.8cm / 0.5 * 0.6 * 2.3 (L * W * H) Package includes: Bluetooth Receiver 1 Piece Clip USB Power Cable 1 pc 1 x 3.5mm jack input Instruction manual 1 pc