Description: parameter: Bluetooth-compatible version: V5.2 EDR Distance: 10 meters Talk time: about 100 hours Listening time: about 88 hours Headphone battery: 350MAH Wireless frequency: 2.4GHZ Support agreement: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Transmission distance: 10 meters Charging voltage/current: 5V/1A Charging time: about 2 hours Standby time: 2220 hours Speaker impedance: 8MM 32&; Microphone sensitivity: -42Db Working temperature: -10-50 Package size: 14.3*9*2.5CM Package weight: 46G Headphone weight: 15.2G Headphone size: 8.2*4.8*2.2CM Specifications: Feature: Low power consumption is the core technology of headphones Adopting exquisite energy gathering cabin design, built-in large-capacity lithium battery, escort your earphones Immersive music experience The crystal-clear sound offer you as close as possible to the sensation of hearing your favorite music live.You can buy two earphones to form TWS binaural Bluetooth-compatible V5.2 stable and fast signal transmission Adopt professional Bluetooth-compatible 5.2 chipset with low-power consumption technology and stable signal transmission to extended playback time. Ultralight and comfortable design, Ergonomically-shaped in-ear buds and ear loops brings comfortable and no heavy feeling even after long time wearing, the 180 degree flip boom arm turns around the corner and fit this headset in right or left ear. Long standby The earphone has a built-in 350mah battery, which provides super battery life Package Included: 1*earphone 1*charging cable 1*instruction Notes: Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a message before you give the bad feedback, if the products