Style: In-EarPackage: YesUse: Portable Media PlayerFunction: Bluetooth，MicrophoneCommunication: WirelessModel Number: Mini Bluetooth EarphoneConnectors: Bluetooth V3.0+EDRUnit Type: piecePackage Weight: 0.057kg (0.13lb.)Package Size: 20cm x 9cm x 4cm (7.87in x 3.54in x 1.57in) Specifications:Brand name: OvlengModel: MiniaBluetooth version: Bluetooth V3.0+EDRStyle: In-earCommunication: WirelessTransmission distance: 10m / 32.8ftWireless frequency: 2.4-2.48gHZType of built-in battery: Rechargeable Li-ion battery Charge time: 2 hours (3.7V)Standby time: up to 12 hoursLasting talking time: up to 3 hoursEarphone diameter: 2.2cm / 0.9inEarphone weight: 4g / 0.1ozPackage size: 19.5 * 9 * 3.5cm / 7.7 * 3.5 * 1.4inPackage weight: 52g / 1.8ozPackage List:1 * Bluetooth earphone 1 * USB cable 1 * Ear hook 1 * User manual(English)