Item type:Bluetooth Headset Activate the wireless headset without pressing any buttons. This Bluetooth earbuds can be turned on automatically and paired after being removed from the charging case. At the same time, they can also automatically power off and charge after putting back the charging box. Excellent Battery Life Built-in extraordinary 350mAh battery base, 40 mAh battery headset and high efficiency power chip in Bluetooth headset. Up to 4-5 hours of playback time on a single charge. Although the smart charging box can be charged 8 times after being fully charged, the total playing time can last up to 40 hours. IPX7 Waterproof IPX7 waterproof earplugs are protected from rain and sweat. Feel free to enjoy any sport, such as running, cycling, training, jogging, hiking, and exercising in your ear. Wide Application Compatible with most Bluetooth devices and mainstream apps on the market, such as smart phone, tablet, computer, MP4, etc.. Material: ABS Bluetooth version: Stereo 5.0 Call/music time : 4H Charging time: 1 hour Standby time: 40 hours Battery capacity: base 350 mAh machine 40 mAh Distance: 24 meters Support Agreement: AVRCP/A2DP/HFP Size: 8*6*2cm/3.14*2.36*0.78in Weight: 230g/8.11oz Package Include: 2x Bluetooth Headset 1x Charging Case 1x Charging Cable 1x User Manual Note: The colors deviation might differ due to different monitor settings.