i11s tws беспроводная гарнитура bluetooth 5.0 гарнитура мини наушники смартфон спортивная гарнитура с зарядным чехлом

1. controller: 15mm 2. impedance: 9 ohm 3bluetooth version: bluetooth 5.0 4. output power: 40mw; battery capacity is 45 mah, charging case is 300 mh. 8. powerful noise reduction circuit (active noise reduction) 9. charging time is about 1-2 hours. the 10 talk time is about 2-4 hours (using a pair of headphones together), about 2-4 hours of music time (using a pair of headphones together), and the charging box can charge the headphones about 3-5 times. 11 standby time is about 120 hours