Bluetooth Version:5.0Wireless Effective Distance: Up to 10mBattery Type: Lithium Ion Battery (30mAh/3.7V)Charging Time: 1 Hour for Earphone, 2 Hours for Chargung Box From EmptyMusic Playtime from bluetooth: Up to 6Hours@50%Volume6Hours Playback For Earbuds + 18Hours for Battery Case..

..

..

..