Description: With bluetooth-compatible 5.1 chip, the bluetooth-compatible earphone has high speed and stable transmission, bringing strong ability of anti-interference. It is convenient to use the earphone, which supports smart-touch. Dynamic speaker brings stereo and heavy bass sound effect, providing you excellent listening experience. It is comfortable to wear the earphone with ergonomic in-ear design. Made of premium ABS and electronic component material, the wireless earphone is reliable and durable. Length of the charging box is 8cm, width is 4.5cm and thickness is 3cm. It is suitable for you to use it for home, office, travel, sport, etc. Item Name: Wireless Earphone Material: ABS,Electronic Component Sensitivity: 103dB Frequency Response: 20Hz-2.48GHz Impedance: 32 Transmission Distance: 10m Bluetooth Version: 5.1 Standby Time: 120 Hours Charging Compartment Battery Capacity: 400mAh (Included) Speaker Diameter: 13mm Earphone Battery Capacity: 35mAh (Included) Endurance Time: 4-5 Hours Size Details: Charging Box Size: 8cm x 4.5cm x 3cm/3.15" x 1.77" x 1.18" (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: 2 x Wireless Earphones 1 x USB Charging Cable 1 x Charging Box