Product information : Model: S7 Usage: semi-in-ear type Features: noise reduction function, subwoofer stereo, call function, long battery life, low delay in e-sports, and support for music. Color classification: red [metal gyro headset +HIFI sound quality+game music dual mode], actinide [metal gyro headset +HIFI sound quality+game music dual mode] Size Information: Size76x34.8x25.55mm Packing list: Bluetooth earphones * 1 set