The item has been tested.

It comes with a box.

Condition: Used. There are no visible scratches or markings.

Frequency range
2.4 GHZ
Frequency response
20 Hz - 20 KHz (+- 3 dB)
Pairing method
Automatic
Power supply
Rechargeable lithium battery
Power consumption
< 70 mA at 0 dBm
Operational distance
25 metres (82 feet)
Operational time
Up to 6 hours
Included
6.35 mm (1/4") audio adapter plug and double charger cord