Brand: Razer
Model: Hammerhead True Wireless
Frequency Response: 20 Hz–20 kHz
Impedance: 32Ω±15%
Sensitivity: 91 ± 3 dB @ 1kHz
maximum. Input power: 8mW
Driver: 13mm
Battery: 275mAh rechargeable lithium battery
Bluetooth wireless range: up to 10m / 30ft