Keep things comfy and casual with the clear truly wireless open ear earbuds. The sleek comfort fit design allows you to listen to your music for hours on end without fatigue. Use the 10-minute quick charge feature to power back up at a moment's notice. The rechargeable case stores an additional 150% charge for long commutes or languid relaxation. Number of Batteries: 1 Included: 1 Usb Cable(s), 1 Carrying Case(s), 1 Instruction Manual(s) Features: Bluetooth Compatible, True Wireless, Built-In Microphone, Rechargeable Battery Type: Lithium Ion Impedance: 16 Ohms Manufacturer Warranty: 90 Day Parts Limited Power Source: Battery (included) Measurements: 5.22 Length/Inches, 1.19 Height/Inches, 1.98 Width/Inches Minimum Frequency Response: 20 Hertz Maximum Frequency Response: 20 Kilohertz Weight (lb.): 0.25 Lb Care: Wipe Clean Country of Origin: Imported