Feature: 1. Smart compatibility supports all mobile phones, tablet notebook devices, and all mobile phones with Bluetooth-compatible. 2. Two Bluetooth-compatible devices can be connected at the same time, and you can switch between listening to songs, games, and calls at any time. 6. Strictly provide waterproof, sweatproof, and dustproof rubber Plug to prevent sweat, water and dust from rusting Parts. 3. .270 degrees rotatable design, suitable for left and right ears. 4. High-quality call listening experience, long battery life, no fear of running out. 5. V9 car hands-0 business headset with microphone. Description: Product Name:Headset Bluetooth-compatible version: upgrade V5.1 Bluetooth-compatible chip; Colour: Black; Material: ABS; Battery capacity: lithium polymer battery 90mAh; Call/listen to music: 8 hours; Talk time: 10 hours; Charging time: 1 hour; Pairing method: For the first pairing, press and hold the power button for 6 seconds to start the Bluetooth-compatible matching mode, and the LED flashes. The red/blue light flashes during dial matching to connect the V9 to a Bluetooth-compatible mobile phone. Button function, long press to turn on, long press to turn off, click music to pause/play/answer/hang up Packing list: 1 x Bluetooth-compatible Headset 1 x Charging Cable 1 x Instruction Manual 1 x Packing Bag Note: 1. Due to manual measurement, please allow 1-3cm error. Make sure you don"'"t mind before bidding. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks.