Dear buyer: When purchasing this Bluetooth headset, please read the following instructions: Due to long-term transportation, the power of tws 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. Very important. Thank you! Note: This product does not have a retail package box! ! ! Features: Modle:Mini-2 TWS Bluetooth version: Bluetooth 5.0 Transmission distance: outdoor straight line distance 10-15 meters Battery capacity: polymer lithium battery Function: fast charging, HD call Listening to music time: about 2 hours Call time: about 2.5 hours Standby time: 130 hours Charging time: 1-2 hours Accessories List: 2 x tws bluetooth earphones (left and right earphones) 1 x Charging box 1 x USB Charging Cable 1 x User Manual Note: This product does not have a retail package box! ! !