This is a ompact high intensity massager with a Silicone flexi-head and a convenient wrist strap. My Micro Miracle Massager is multi-speed and requires LR44 batteries. Twelve batteries included for your convenience. The tip is 1"x 1"/ 3 cm x 3 cm and the overall length is 4.25"x 1"/ 11 cm x 3 cm.