Retro Style Smart Ring Heart Rate And Blood Pressure

Product information:
Battery capacity: 20mA
Appearance: stainless steel
Additional functions: health monitoring
Color: retro black 8th, retro black 9th, retro black 10th, retro black 11th, retro black 12th, retro black 13th.


Packing list:
Ring *1, charging cable *1, instruction manual *1