Features:-Easy to use, the volume can be easily adjusted with the touch of a button, no tools required.-Built-in energy-saving rechargeable battery prolongs battery life and extends the time between charges, supporting all-day use.-The charging box can be fully charged in 2-3 hours, and after being fully charged, it can achieve an ultra-long standby time of 35-48 hours.-Each weighs only 3 grams, which is convenient and comfortable to wear. It comes with earplugs of different sizes to fit everyone's ears perfectly.-It adopts a compact and lightweight design, which satisfies your convenience of carrying and invisible wearing, and can be used anytime and anywhere.Specification:Colour: white&goldStyle: in the earPower source: built-in 300mAh batteryEquiv.