Small, compact and very affordable headphones for both Android and iOS phones! You can choose to have both headphones connected to your phone at the same time or just one. Both headphones connect automatically when you turn them on. Practical charging case with support for inductive charging (wireless) included. Perfect for charging your headphones while you are at work, school or on the go. Bluetooth version: 5.1 Touch control Support for inductive charging (wireless) Range: 8-15 meters (also depends on the environment, thick walls, etc.) Battery capacity case: 3.7v, 180mAh Battery capacity headphones: 3.7v, 25mAh Output: DC 5V, 0.5-1A Charging time (with cable): about 1 hour Charging time (from case): about 2 hours Playtime: about 4 hours Standby: 120 hours Frequency range: 60hz-20KHz iOS and Android mobiles, as well as other devices with Bluetooth support. To keep costs down, we ship the headphones without packaging Compatible with all accessories