1、HIGH DYNAMIC RANGE: Bluetooth earpiece has a high dynamic range and provides you with superior sound that lets you feel every tempo, hear every note, and be fully immersed. Whether you're at the gym, watching a show, or connecting with someone over the phone, your earpiece delivers crystal clear sound. 2、ADAPTABLE DEVICES: Wireless earpiece uses Bluetooth 5.1 technology to provide fast and stable pairing with any for iOS and for Android smartphones, tablets, and laptops up to 10m/10.9yd away, ensuring a stable connection in complex environments. 3、BUILT IN MICROPHONE: Wireless bluetooth earpiece uses advanced CVC8.0 built in HD microphone to provide you with crystal clear sound and natural sound, so you can enjoy premium music and clear phone calls anytime, anywhere. 4、HANDS FREE: Bluetooth handsfree headset supports for Siri and voice helper. Buttons are easy to access and can be easily muted or unmuted with the touch of a button. Voice alerts for battery level, connection status, mute status, and even announces the caller's phone number. 5、COMFORTABLE TO WEAR: Wireless handsfree headset features a monaural design with retractable and rotatable ear hooks for a comfortable fit. It is lightweight and comfortable and can be worn for hours at a time. 6、LONG STANDBY TIME: Single ear bluetooth earpiece can talk continuously for 10‑12 hours and has a standby time of up to 400 hours, with a quick 1.5 hour charge for reliable wireless calls all day long. LED digital display to check the charge level of the charging compartment at any time.