Features: 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 abs, one-key operation alarm/turn down the volume or turn up. The charging box can charge the smartphone,as a power bank. Specifications: Material:Metal Color:Black,Purple (Optional) Bluetooth-compatible Version: 5.0 Operating Range: About 33feet Barrier-free Transmission Distance (10meters Barrier-free Transmission Distance ) Standby Time:About 120hours Charging Port:Type-C Charging Box Capacity:2000mAh Resistance:32Ω Frequency Response:20Hz-20Khz Rated Input:5V IPX7 Waterproof Package Includes: 1 Pair Headsets 1x Charging Box 1x Charging Cable 1x User Manual 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.