Features: 100% brand new and high quality Synchronization reaches the microsecond level with almost no delay. Suitable for games. Bluetooth-compatible 5.0 stable and continuous connection, bring better connection performance, call effect, compatibility has been significantly improved. The wireless in-ear earphones are made according to the ear canal and fit perfectly. This earphone can not only ensure the comfort of wearing all day, but also improve the sound insulation effect of the earphone. Exquisite workmanship, simple operation: the exquisite craftsmanship of metal and resin combination, one-key operation alarm/turn down the volume or turn up. The charging box can charge the smartphone,as a power bank. Package Includes: 1 Pair Headsets 1x Charging Box 1x Charging Cable 1x User Manual Specifications: Material:PC Color:Black,White(Optional) Bluetooth-compatible Version: 5.0 Operating Range: About 33feet Barrier-free Transmission Distance (10meters Barrier-free Transmission Distance ) Earphone Charging Time:About 30-45 mins Storage Box Charging Time:About 2-3hours Calling Time:About 4hours Charging Port:Micro USB Charging Box Capacity:800mAh Earphone Capacity:45mAh Charging Voltage: 5V 500mA IPX7 Waterproof note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.