Selling Wireless Bluetooth headphones: Model: SHB7250
Used it for several years. The surface is a little worn and there is a small chip, but they sit on the ears very comfortably and their sound and connection are still good.
Battery: I used them on the way to and from my job (an hour and a half in total) for 5 days and only charged them on weekends.
Frequency range: 8 - 40 000Hz*/ 8 - 23 000Hz (BT mode)
Speaker diameter: 40 mm
Impedance: 32 Ohm
Audio Connections: 3.5mm
Bluetooth version: 4.0