battery capacity: 43mah/ earbud wireless range: 10m (free environment- no obstacle) charging time: 1.5hr talk time: approx 4hrs bluetooth profile: hfp/a2dp/hsp/avrcp battery capacity: 300mah input: 5v-500ma output: 5v-150ma lithium polymer battery charging case standby case time: approximate 4 months charging time: approx 2hrs 3 pairs what’s in the box 1x charging case 1x a pair of earbuds 1x manual 1x charging cord specifications