Specifications:The wireless earphone has bluetooth-compatible 5.0 chip, which has faster transmission speed, lower consumption and high performance.With ergonomic design, it is comfortable to wear and not easy to fall off.When you use it for the second time, it can be automatically paired.Item Name: Wireless EarphoneMaterial: PlasticBluetooth Version: 5.0Transmission Space: 20mWorking Frequency: 2.402-2.480GHzEarphone Battery Capacity: 100mAh (Included)Charging Voltage: DC 5VEndurance: 16 HoursCharging Time: 2 HoursDrive Unit: 7mmFeatures: Wireless, In-ear, ComfortableSingle Size: 3.5cm x 3.5cm x 2cm/1.38" x 1.38" x 0.79" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:2 x Wireless Earphones1 x Storage Pouch1 x USB Charging Cable4 x Ear Caps1 x User Manual