Item Type: Sports Headset Model: GYM-F1 Material: ABS BT Version: V5.1 Transmission Distance: Approx. 10m 32.8ft Working Frequency: 2.402-2.480GHz BT Mode: A2DP, Headset, Handsfree Impedance: 32 Interface: Type C, Memory Card Charging Input: DC 5V 5-200 mA Battery: 700 mAh lithium battery (included) Application: Smart Compatible for Android, iOS and other systems. 1. Free Switching: Free switching from Smart One to Two, you can connect two mobile phones or computers at the same time and switch the connected devices at any time for work and entertainment. 2. BT V1: High performance, compared with the old version of BT 0, the transmission distance is increased by 25%, the signal stability is increased by 25%, and the standby power consumption is reduced by 15%. 3. Comfortable: Stable and comfortable to use, no pain, ergonomic design of the tilt angle, you can't get rid of it wildly. Dynamic bio-diaphragm speaker, clear sound quality, amazing audiovisual sound effects. 4. With Flashlight: The BT headset is also a flashlight headset equipped with a very bright flashlight, suitable for night light reading, outdoor lighting when traveling, searching for items and other scenes. 5. Portability: The magnetic absorption design is more convenient, the magnetic design with two headphones does not wrap around and is easy to store, and it is light and fashionable to wear and not easy to lose. KLB Store