Hands Free Ear Hook Bluetooth Headphone Wireless Painless Bone Conduction Earphone Headset(Red) This Wireless Bluetooth Headphone uses painless design, you needn't to plug it in ear. It supports answering phone calls, and easy to operate. And it won't influence your normal hearing, safe and convenient. The clear voice and good quality can provide you with excellent user experience. Features: 1. Painless ergonomic design -- You can use it when you are riding, driving, mountaineering, working, running, etc. 2. Invisible and compact design -- Light weight and small, easy to carry. 3. Ear hook type headset -- You do not need to put the headset into ear, it can clearly play music and make phone calls and harmless to your ear. 4, IP X5 level waterproof -- Waterproof, anti-sweat and anti-splash. 5. There is no difference between left and right wearing. 6. Chinese and English voice reminding. 7. Wireless Bluetooth Headphone -- Compatible with Bluetooth V4.0, V3.0, V2.1 V1.1 with 1intelligent connection.   Specification: Bluetooth version : V4.2+EDR, compatible with V4.0, V3.0, V2.1 V1.1 Transmission power: Class2 Transmission frequency: 2.4GHz Transmission distance: more than 10 meters Battery capacity: 90mAh Call time : Approx. 5-6 hours Playing time : Approx. 1-2 hours Standby time : Approx. 100 hours Supported file formats: for IOS, A2DP, AVRCP, HSP and HFP Product size: Approx. 7.3 x 4.5 x 0.7cm / 2.9 x 1.8 x 0.3in Weight: 31.10g / 1.1oz Color: Black, Red, Gold, Silver (optional) Package list: Headset x 1 Cable x 1 Manual x 1 Silica Gel Cover x 1