motor body size: 8 x 2.7mm / 0.31 " x 0.10 It is widely used phones, toys, for, handicrafts, electronic products,, tablet computers, wearable devices and for smart watches, where is required instead of physical buttons for reminders Miniature motor voltage: 3V; speed: 12000 RPM Self-adhesive vibrating micro-motors for cell phones, cell phones, and pagers