The earphones charge automatically when the case cover is closed, and the charging case is also rechargeable. P36 can be used for 6 hours after full charge, and the charging box can fully charge the earphones 4-6 times. That means 24 full hours of music, or 120 hours of standby time, with a quick charge in 1 hour. Bluetooth 5.2 and deep stereo bass: The Bluetooth connection speed can reach 48Mbps at a distance of 10 meters, thanks to the powerful anti-interference technology. This means smoother, clearer conversations and no music cuts when you're on the go. Unique stereo design provides sound that really makes you feel the music. Small size ergonomic design and IPX6 rating: These headphones are cool, practical and high-quality thanks to their surface, discreet in-ear design, soft sleeves and True Wireless technology. Free your hands and your music: the IPX6 protection rating indicates resistance to rain and perspiration. The metal charging station is stylish and fits in your pocket, or you can keep it in your hand for great mobility while hanging. Premium charging case with patented independent power management technology: Proprietary patented independent power management technology allows you to charge the left and right headphones separately, for extended use. Place one or both headphones in the dock: The headphones will charge automatically. Mono and Binaural Mode: The two earphones can be used separately or with two channels, and each earphone can be paired independently. Each side "L" and "R" can control play track or pause or previous or next or volume up or volume down or answer or hang up or reject call. It's like having two completely self-contained headphones. Connect to the same device to share music with your friends or use both headphones to enjoy stereo sound. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.