Product model：M28 Speaker power：32 ohm-0.0015 mW*2 true copper ring Speaker specification：8mm*2 Bluetooth version：JL 6983/5.1 version Bluetooth distance：10-12 meters Product size：45mm*18mm*24mm Headset battery：50mAh Product weight：98g Charging case battery:2000mAh Charging case size:85mm*55mm*30mm...
