Bluetooth Version: 5.3
Battery Type: lithium
Case battery capacity: 350 mAh
Headphone battery capacity: 30 mAh
Operating time (calls/music): 4 hours
Battery charging time: 1.5 hours
Speaker size: Ø13 mm
Frequency range: 20-20000 Hz
Impedance: 32 Ω ± 15%
Input: Type-C