Parameters: 1.Bluetooth Transmission Range: 10 Meters 2.Rechargeable Battery Capacity: 300 Mah 3.Headphone Battery Capacity: 40 Mah 4.Working Time: About 2-5 hours 5.Charging Time: About 1-2 hours 6.Standby Time: About 150 hours 7.Material: Plastics 8.Waterproof Rating: IPX5 9.Operation Mode: Touch 10.Compatible: Android, iOS, Microsoft, Tablet, 99% of the phones with Bluetooth. Features: 1. Full Frequency HIFI Moving Iron 2. LED Digital Display, Real-Time Power Display, Power Level At A Glance 3. The Left And Right Ears Can Be Used Separately And Can Be Independently Matched With Bluetooth Devices 4. Smart Buttons Design, Easy To Operate 5. Bluetooth 5.0, Low Power Consumption Note: When purchasing the tws Bluetooth headset, please read the following instructions: Due to long-term transportation, the power of the tws earphone will be exhausted. You will not be able to use the headset when you receive the package. It may be powered off. The first thing to do is to charge the headset box for 30 minutes. Packing List: 1*Bluetooth Headset(L) 1*Bluetooth Headset(R) 1*charging box 1*data cable 1*manual