Mini-2 Bluetooth Earphones Wireless Headphone TWS Earpieces Sport Earbuds For Huawei Iphone Xiaomi Music Headset i12 Product parameters Chip: Zhongke Lanxun Bluetooth version: 5.0 Charging interface: Micro USB Music playback time: 2-3 hours Horn: Copper ring horn Standby time: 30 days Connection distance: within 10m Charging time: Headphone charging for approximately 0.5h Charging chamber charging: 1h Battery capacity: headphone 35mAh&charging compartment 300mAh Music time; 2-3h call 2-3h Waterproof grade: ipx4 Shell material; ABS/rubber oil Reminder: 1, Try to keep the direction of wearing headphones and phones on the same side of the body as much as possible 2, Avoid keeping your phone in your bag. Generally speaking, canvas bags create fewer obstacles, while leather or briefcases create more obstacles 3, In case of similar interference, you can remove the Bluetooth device from the phone, turn off the phone, restart it, and then pair it with the Bluetooth headset again for use 4, The biggest thing to note when using Bluetooth earphones is the charging time of the built-in battery. The charging time for new Bluetooth earphones is between 2-3 hours, while for used ones, it is better to charge between 1-2 hours