Bounce Bass Series. Studio-style wireless Bluetooth headphones Specifications: - Material: ABS - Bluetooth Version: V2.1 - Drive Unit: F40mm/30mW/32O - Frequency: 2.402 to 2.480GHz - Battery: 3.7V/250mAh - Charging time: 2 to 3 Hours - Play Time: 4 to 6 Hours - Sensitivity: 105dB /- 5dB - Plug type:3.5mm stereo - Walk the Talk function Note: Radio not included What's in the box 1 x Bounce Bass Series Bluetooth Headphones