Brand N/A Model Mini-503 Quantity 1 Color Black + Red Bluetooth Version V2.1 + EDR Ear Coupling Behind the Neck Talk Time 2~3 Hour Standby Time 100~250 Hour Operating Range 10 meter Compatibility V2.1 + EDR or the version earlier than V2.1 + EDR Microphone Yes Built-in Battery Capacity 100mAh Compatible With The devices with Bluetooth V2.1 + EDR version or the earlier version BQB Certification No Other Features Frequency: 2400.0~2483.5MHz; Bluetooth support: Headset handsfree A2DP and AVRCP; Chipset: CSR; Music playing time: up to 7 hours; Fashionable design high quality Packing List 1 x Headset 1 x USB cable (93cm) 1 x Chinese user manual