Not in Ear, Bone Conduction: This Bluetooth headset abandons the traditional earphone design, and has a binaural induction non-earplug hanging ear design, saying goodbye to the swelling caused by earplugs. Non-in-ear design, earphones that fit the contours of your ears, so that you will not feel pain when wearing them for a long time. Upgrade Bluetooth 5.0: Bluetooth 5.0 transmission is more stable, the delay is lower, and the maximum distance can reach 15 meters (49 feet). Compatible with Android/IOS iPhone. Suitable for business/office/sports occasions. Long Battery Life and Obvious Noise Reduction: 140mAh large battery capacity, strong battery life, allowing you to talk and listen to music without restriction. Through active noise reduction chip processing, effectively remove noise, ask you to provide high-quality sound effects. Portable and Easy to Operate: Our wireless bluetooth headset has a small body and light weight. Turn on Bluetooth automatic connection. With clear buttons, it is easy to realize the functions of making and receiving calls and volume adjustment. Waterproof and Sweatproof, Lightweight Sports Earphones: Our wireless bluetooth earphones are made of high-quality waterproof materials and are not afraid of sweat and rain. It perfectly fits the contours of human ears and is not easy to fall off. The lightweight material allows you to wear it comfortably and will not oppress your ears. Description: Item type: Bluetooth Bone Conduction Earphone Colour: Black/ Blue/ Red Bluetooth version: V5.0 Bluetooth distance: 10m-20m Battery: 140mAh Standby time: 200h Working voltage: 3.7V-4.2V Continuous playback: 4-6h Protocol support: A2DP1.3/HFP1.7/HSP1.3/AVRCP1.6 Weight: 9g Size: 71*39.6*8mm Package included: 1 x Earphone 1 x Charging Cable 1 x User Manual Note: Please allow 1-3 cm difference due to manual measurements. Please note that slight colour difference should be acceptable due to the light and screen.