enjoy wonderful music and clear communication. It uses BT 4.0 + EDR technology, the transmission rate is greatly improved, high efficient transmission, low consumption. With the BT function, you can operate on the headset to redial, to keep the call, or refuse to listen to. Its new peg design, can clip on clothes easily, when call needed, you can slowly pull the speaker from the top position of headsets. This headset is really a good choice for listening music, watching movie, chatting online, etc. Features: This F920 uses renowned stereo BT CSR 4.0 chip to ensure high-fidelity sound quality and stable performance. Noise-cancelling, noise-free environment to prevent hearing loss caused by high volume. Support vibration alert, you won't miss any call while listening to music. Allow you to power on/off, answer/hang up/reject/redial call, pause and play, vol+/-, next/previous track. Support multi-point connection, can connect two BT devices at the same time. Great compatibility, compatible with iPhone 6S 6 6 Plus Samsung S6 S5 Note 5 HTC Tablet PC Laptop and other devices with BT function. Long battery life, it offers you 6 hours of continuous playing time, 8 hours of talk time, and up to 5 days standby time. Power-saving, it will shut down after 5 minutes of inactivity. Build-in rechargeable li-battery, can be charged via USB cable. Specification: Model Number: F920 BT Name: F920 BT version: BT 4.0 + EDR Transmission range: 10m（without obstruction) Standby time: Approx. 5 days Talk time: Approx. 8 hours Music play time: Approx. 6 hours Charging time: Approx. 1.5 ~ 2 hours Color: White, Black, Gold (Optional) Package size: 17.5 * 12.5 * 3.5 cm / 6.9 * 5 * 1.4 in Package weight: 89g / 3.14oz Package List: 1 * BT Headset 1 * USB cable 1 * User Manual