Taotronics TT-BH041 Wireless Mono Headset Headphone Black TaoTronics BH041 is the world's first AI noise cancelling headset, slashing background noise up to 40dB, be heard clearly in noisy situations Advanced QCC3020 Chipset: Bluetooth 5.0 headset with QCC3020 chipset for fast & stable signal transmission; freedom to pair with two Bluetooth devices simultaneously Wireless earphones provide up to 34 hours of continuous talking on a single full charge, always ready to answer or make hands-free calls 2.8oz lightweight headset with adjustable headband fits any head shape; soft earpad & anti-slip pad stays securely in place for all-day comfort Mute your voice with the mute button, redial/answer/reject/end/transfer calls with the multifunction button & adjust call volume with the "+" or "-" button Technical Specifications: Bluetooth Version:5.0 Bluetooth Range: up to 10m/33ft Playtime: 34 hours Charging Time: 2 hours Battery Capacity: 400mAh Angle for Microphone: 270° Net Weight: 2.8oz Size: 6.4 x 6.3 x 2.4 in/163.7 x 160.78 x 61.6mm