1. Impedance: 32 ohms
2.Frequency response: 20Hz-20kHz
3.Rated power: 40mW
4.Drive unit: 40mm
5.Bluetooth version: 5.0
6.Charging time: 2 hours
7.Standby time: 1 year
8. Average battery life: 14-15 hours
9. Foldable design easy to carry
10. Ergonomic design comfortable to wear
11.Support multiple playback modes: bluetooth/wired/SD card
12.Dimensions: 180x176x74mm
13.Weight: 178g