Tech Specs:
Wireless Technology: Digital 2.4GHz
Transmission Mode: Full-Duplex
Operating Range: 500 m (LoS)
Frequency Band: 2.4 GHz
Approximate RF Sensitivity: <-90 dBm
Radio Output Frequency: 20 dBm
Power: USB-C 5V
Battery Capacity: 1050 mAh Li-ion Battery
Working Time: 24h
Charging Time: about 2.5h
Frequency Response: 150 Hz ~ 7 KHz
Signal-To-Noise Ratio: ≥ 65dB
Distortion: <1 %
Microphone Type: Condenser Microphone
Max Input Sound Pressure Level: >115 dB SPL
Output Sound Pressure Level: Typical 98+3dBSPL (at 94dBSPL 1KHz)
Weight: 242 g (Battery Included)
Temperature Range: 0~+45° C (Working Status); -20~+60° C (Storage Condition)

What's in the box (XMax9):
9x Headset
9x Mic Windshield
9x On-Ear Foam Cushions
9x Rechargeable Battery
9x Carrying Bag
1x Storage Case
1x Data-Transfer Cable
2x Charging Adapter
2x 6-Slot Charging Station
1x Warranty Card