Brand ROMAN Model R525 Quantity 1 Color Black + Silver + White Bluetooth Version v3.0 + EDR Ear Coupling Earbud Talk Time About 4 Hour Standby Time About 100 Hour Operating Range >=10 meter Compatibility Bluetooth v2.0 / 1.1 / 1.0 Microphone Yes Radio N/A Supports Music Format N/A Power Supply Built-in Battery Built-in Battery Capacity 130mAh Other Features Connects two devices at the same time; Packed with 2 different cases; Voice prompts function. Packing List 1 x Bluetooth headset 1 x Data cable (40cm) 1 x Earphone (53cm) 1 x Chinese user manual 2 x Cases (Red / Green) 1 x Ear hook