Specifications: With bluetooth-compatible 5.1 chip, the wireless earphone has fast and stable connection. It is wearable that is not easy to fall off and is suitable for sport. With IPX5 waterproof level, the earphone is suitable for sport and rainy days. High speed transmission efficiency realizes low latency for gaming. Designed with CVC and DSP double noise reduction technology. Button control is easy to use. Item Name: Wireless Earphone Material: Plastic, Silicone, TPE Bluetooth Version: 5.1 Transmission Space: 10m Best Phone Call Space: 8m Speaker: 10mm Impedance: 16±10%Ω Sensitivity: 91dB±3dB Frequency Response: 20Hz-20kHz Music Time: about 12 Hours Talk Time: about 12 Hours Charging Time: about 2 Hours Battery Capacity: 130mAh (Included) Features: Wireless, Magnetic, Rechargeable Size: 14cm x 12cm x 2cm/5.51" x 4.72" x 0.79" (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 x Wireless Earphone 1 x USB Charging Cable