Bose Wireless Earbuds

Brand Name: Bose Model Number: tws-021 Bluetooth Version: BT 5.0 Bluetooth Protocol: HFP, A2DP, HSP, AVCRP Audio Codec: SBC/AAC Frequency Range: 20-20000Hz Sensitivity: 108±3dB Impedance: 32Ω Transmitting Distance: 10m/33ft Charging Case Capacity: 3.7V 800mAh Earphone Battery Capacity: 2* 3.7V 43mAh Music Play Time: about 4 hours (depends on music volume) Charging Time: about 2 hours Protection Standard: IPX4 Material: ABS Color: Black Earphone Size: 21*19*13mm/0.82*0.74*0.51in Earphone Weight: 10g/0.34oz (Pair of Earbuds) Charging Case Size: 76*37*30mm/2.99*1.45*1.18in Charging Case Weight: 42g/1.48oz Package Size: 16.0*11.5*4.0cm/6.29*4.52*1.57in Package Weight: 155g/5.47oz Package List: 1* Headphones with Charging Case 1* Charging Cable 3* Replaceable Ear Tips 1* User Manual (English / Chinese)