Features 1、DIAPHRAGM SPEAKER UNIT: Wireless earpiece conforms to the diaphragm speaker unit, equalization adjustment technology and fine tuning, layered and rich in detail. 2、BLUETOOTH 5.1: Ultralight business earphone uses Bluetooth 5.1, safe, stable and fast, DSP voice data processing. 3、NOISE REDUCTION: Wireless earpiece has built in CVC noise reduction technology, which effectively shields the ambient noise to reduce interference during calls. 4、COMFORTABLE TO WEAR: Bluetooth 5.1 headset is compact, thin and light without pressure on the ear, comfortable and safe to wear. 5、FAST CHARGING: Wireless bluetooth earpiece built in high capacity polymer lithium battery, fast charging, long battery life. 6、COMPATIBLE DEVICES: Bluetooth earpiece is compatible with most of the mainstream for Android and for iOS cell phones and tablets and other Bluetooth devices. Specification Item Type: Wireless Bluetooth Earpiece Material: PC, ABS Bluetooth: 5.1 Sound: DSP Voice Data Processing Operating Range ≤10m/32.8ft Built In Polymer Lithium Battery: 70mAh Package List 1 x Wireless Bluetooth Earpiece 1 x Instruction Manual 1 x Charging Cable