Toshiba AirPro RZE-BT1000E Black

Bluetooth V4.2 + EDR Supported profile: HFP, HSP, SPP, A2DP, AVRCP Service distance: Approx. 10m Frequency response: 20Hz - 20kHz Driver impedance: 32 ohm Battery: Internal lithium polymer ion battery, Charging case 450mAh / Earphone 40mAh x2 Charging time: Charging case approx. 1.5hrs/ Earphone approx. 1.5 hrs. Charging voltage: DC 5V (Micro USB charging) Operating time: Bluetooth® music play time approx. 4hrs Accessories: Micro USB cable, Earpiece S/M/L, Charging case, Neck strap, Operation manual (English) Colour: Black   Dimensions: 92.5 x 35 x 35 mm (Case, approx.) Net weight (Case, approx.): 40 g Net weight (Earphone, approx.):  5.2 g x 2