材质
Medical grade silicone +ABS
main material
Medical grade silicone +ABS
Keywords
Kegal Exercise Balls
Size
Single ball: * 33 * 125 *33 mm Double ball: * 33 * 170 * 33 mm
battery capacity
Lithium battery 3.7 V / 50 mah
Charge/Use Time
35 to 60 minutes