Digital Power Display：Upgraded power display, clearly show you the power to charge on time. Incredible Sound Quality: Bluetooth 5.0 and lossless HD rendering technology produce incredible sound quality with crystal crisp treble. Enjoy your music everywhere even in a loud environment. Fast Pairing: Pull both earbuds out of charging box and they will pair with each other automatically, Search and connect Bluetooth with your phone. In a matter of seconds, you are in your music world. Wearing Comfortable: New in ear design, snug and secure, comfortable to wear, will not cause ear swelling. Charge on the Go: The wireless earbuds can last up to 4 hours’ music playtime on a single charge. While on the go charging case the super musical earbuds power can last up to 60 hours. Model:F9