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: 1Included: 1 Carrying Case(s), 1 Instruction Manual(s), 1 Usb Cable(s)Features: Rechargeable, True Wireless, Built-In Microphone, Bluetooth CompatibleBattery Type: Lithium IonImpedance: 16 OhmsManufacturer Warranty: 90 Day Parts LimitedPower Source: Battery (included)Measurements: 1.19 Height/Inches, 5.22 Length/Inches, 1.98 Width/InchesMinimum Frequency Response: 20 HertzMaximum Frequency Response: 20 KilohertzWeight (lb.): 0.25 LbCountry of Origin: Imported