Specification:

. Bluetooth distance: more than 12 meters
. Speaker specification: AAC0
. Indications: red + blue (left) + red + blue (right)
. Battery: 75 mAh + 75 mAh
. Charging period: 2 points (left) + 2 points (right)
. Standby time: about 160 hours
. Call time: about 6 hours