[Dual microphone noise reduction] ----B3 Bluetooth headset is equipped with 2 microphones and the latest CVC8.0 technology can block interfering background noise such as traffic, crowds or wind, providing clear audio and natural sound, so you can Enjoy high-quality music and clear calls anytime, anywhere. [Convenient and comfortable] ---- The extremely comfortable ear gel comes in 3 different sizes (one on the earphone), providing comfortable and safe customization. And can be rotated to ensure a firm fit. Lightweight, comfortable, close-fitting, safe, tailored for you, you can wear it for several hours at a time. [Super Power] --- Up to 16 hours of continuous talk time and 24 hours of continuous listening to music. 240 hours long standby time. Magnetic charging takes about 1-2 hours. When fully charged, the Bluetooth headset 5.0 large-capacity battery is the best companion for boarding, express, rider delivery, traveling, going out, driving, etc. Stable connection----The worry-0 Bluetooth headset can be connected to 2 devices at the same time, and the two devices can play music/call/play games. This Bluetooth headset is compatible with all Bluetooth devices. SPECIFICATION: Bluetooth Version: 5.0 Talk Time: Up to 16hours Music Time: Up to 24 hours Standby Time: Up to 240 hours Charging Time: Around 1.5 hours Transmission Distance: 10~30m Microphones: Omni-directional microphone Speaker: Dynamic speaker Package list A: 1 x Bluetooth Headset 1 x USB cable 1 x User manual Package list B: 1 x Bluetooth Headset 1 x USB cable 1 xStorage case 1 x User manual