Features: brand new and high quality Bluetooth-compatible 5.1 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. The 1200mAh large-capacity charging compartment can not only charge the earphones, but also can charge the mobile phone, so you don'for t need to worry about running out of power during the journey. Quick pair as soon as you take out the earbuds from the charging for case. Specifications: Material:ABS Color:Black,White(Optional) Bluetooth-compatible Version: 5.1 Operating Range: About 33feet Barrier-free Transmission Distance (10meters Barrier-free Transmission Distance ) Charging Box Capacity:1200mAh Single Headset Capacity:50mAh Noise Reduction:CVC8.0 Input Current:5V 1A Automatic Boot Up:Support Automatic Matching:Support Phone Call Time:About 180hours(to be used with charging box) 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. Package includes: 1 Pair Bluetooth-compatible Earphones 1x Charging Box 1x User Manual