Use: Portable Media Player, Mobile Phone, Aviation, Computer, DJ, Gaming, Sports, Audiophile, travel, Professional, Hearing Aid Function: Bluetooth, Waterproof, Noise Cancelling, Microphone Style: In-Ear, Headband, Earbud, TWS (True Wireless Stereo) Communication: Wireless Cord Length: None Bluetooth Standard: v5.0 Waterproof Standard: IPX-7 Active Noise-Cancellation: Yes BT Version: V5.0+EDR Music time: 4-5 hours Charging time: 1 hour Standby time: 120 hours Charging Case Battery: 300mah Bluetooth distance: 40mah FEATURE Waterproof and Sweatproof. The earphones come with original silicone ear caps to protect the headphones from the sweat. Automatic Booting pairing. After the first pairing, take out the headset and automatically connect with the device without unnecessary operation. Easy pairing connection. One Button easy to answer, hang up, replay, play, pause, and power on and off. Binary Separation independent mode. The true wireless binaural separation design can be used separately and the two headphones are connected to two devices to adapt to various working scenarios. Light and free to fit both ears. Enjoy your music in every moment of your life: from outdoor running to indoor fitness, from rest and relax, to safe driving, you will even forget to wear them!. High-quality Bluetooth 5.0 Chip and EDR Bluetooth enhancement solution are faster and more stable and solve the problem of the previous generation Bluetooth delay card. Smart charging case. The case will automatically charge them you will never run out of the power during your busy days.