Our earphones with a 8mm dynamic sound unit that delivers powerful bass and clear, bright middle and high frequencies. High resolution decoder and audio coding technology for two-channel stereo effect during calls. The charging case has a 300mAh large battery, put the earbuds into the charging box and will charge automatically. And more, it also can provide long and continuous music time. Automatic pairing and charging with automatic connection to matched devices. IPX5 waterproof effortlessly protects the earbuds from slight raindrops or sweat during intense workouts. With upgraded Bluetooth-compatible chip design, our wireless earphones provide a more stable and fast connection. Stable and fast connection in just 1 second. Sending the wireless earphones to families and friends as a holiday gift, it will be a perfect way to create lasting, loving memories. Item Name: Wireless Earphones Material: ABS Bluetooth-compatible Version: 5.1 Bluetooth-compatible Distance: Within 10 Meters Single Earphone Battery Capacity: 40mAh Charging Case Battery Capacity: 300mAh Talk Time: 3 Hours Music Time: 3 Hours Features: Waterproof, Lightweight, Auto Pairing Size Details: L: 6cm/2.36", W: 4cm/1.57", H: 3cm/1.18" (Approx.) Notes: 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. Package Includes: 1 Pair of Wireless Earphones 1 x Charging Case 1 x USB Cable 1 x User Manual