Volkano SoundSweeper Series Active Noise Cancelling BT Headphones

Bluetooth Version: 5.3.
Chipset: BT.
Bluetooth Distance: 10m.
Impendence: 32 Ohm.
Frequency Range: 2.4 - 80Ghz.
IPX level: IPX 3.
Sensitivity: 108 +- 3db.
DB Noise Reduction: 20db.
Battery: 400mAh.
Driver Size: 40mm.
Charging Time: 2 hours.
Charging Input: 1A.
Playtime: Up to 20 hours.

What's in the box.
1 x Volkano Soundsweeper Pro Series ANC Headphone.
1 x Charging Cable.
1 x Instruction manual.