Description: This headphone adopts Bone Conductions Technology, is the Ear-hook design, not in-ear, free from eardrum damage, easy to carry Button design allows you to switch to the desired state: play/pause music, answer/end/reject calls, volume +/-, previous/next track. 130mAh rechargeable battery provides about 5 hours of playback time and the standby time can last to 120 hours. Comes with built-in Microphone, greatly setting free your hands from answering the call during exercise. IPX4 Waterproof and sweat-proof design, running fitness can be worn without interference from rain and sweat Uses BT 5.0 chip to ensure super-fast data transmission and stable performance. Specification: Name: Bone Conduction Bluetooth Headset Model: DYY-5 Bluetooth version: BT5.0 Operation range: Up to 10 meters (no obstacle) Dynamic Unit: 16mm Frequency Range: 20-20KHz Battery Capacity: 130mAh Music Playing Time: about 5 hours (depends on music volume) Talk Time: about 6 hours Standby Time: 120 hours Charging Time: about 1.5 hours Size(LxWxH): 13.5 x 11.8 x 4.7cm/5.3 x 4.6 x 1.9 inch Package Includes: 1x Wireless Headphone 1x Manual 1x Packing Box Note: 1.Please allow 1~3 cm error due to manual measurement, thanks. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you!