•Bluetooth version v5.0
•Bluetooth workable distance 15 meters without instructions 
•Battery capacity for earburds 50 mAh , can last 25-35 hours /0.09WH for any communication 
•Battery capacity for charge capsule (powerbank)  1000mAh can be also used for a mobaile power supply in emergency 
•Daily waterproof level 6,touch operation in green power indicator light,  wirless Bluetooth,  charge pal. 
•For ios and android both