version: Bluetooth V5.02. Working Time: 2-3 hours.
Charging time: 1 to 3 hours.
Battery capacity: 35 mAh.
charger: 300 mAh charger. Wireless distance: 8-12m.
Speaker: High quality copper ring speaker. Product weight: 4-5g
Compatible phone: compatible with Android, IOS, microsoft, etc.