Battery power LED display: The charging case with built-in 3500 mAh battery, It can be charged automatically once the earbuds is put in the charging case. Battery status of earbuds and charging box can display clearly^ STRONGER SINGNAL & LONG BATTERY LIFE: Latest Bluetooth 5. 0 technology provides a solid connection and lower power consumption, also support dual stereo calling, just fully charged the Bluetooth earbuds, then they will support you to enjoy 4-5hours music or call. it comes with a 2000mAh portable charging case, just put earbuds into the case, the earphones will automatically charge, just bring the case, the total working time will be upped to 120hours.^ Tws hi-fi stereo sound: wireless earphones high-quality speakers with customized hi-fi sound unit make Deep bass, crisp clear treble and nice midstbluetooth earbuds has stereo and monaural modes. You can just use one or enjoy the stereo sound by using them together. High-quality speakers with customized hi-fi sound unit will bring a feast of hearing to you.^ Lightweight Mini& comfortable design: only 5 g, The Mini earbuds is cochlear form, the shape of the Bluetooth earphones are strictly designed according to human ear form, Comfort is . 12 gram for each wireless headphone and 50 gram in total with charging box let the headphones Super light use, carry and put somewhere in you pocket.^ Cvc 8. 0 noise cancelling: excellent sound quality, advanced 5. 0 technology, delivers first-class sound, provides faster pairing, The connection more stable and working distance is as far as 10 meters. Cvc 6. 0 noise reduction can making for crystal clear voice transmission to diminish background sound and provide a superior listening experience ^