The Melo Massager is an extremely durable handheld massager featuring 6 different speeds designed to satisfy every individual. The massager is developed to provide quick and precise relief by increasing blood flow and reducing built-up lactic acid to ease muscle fatigue, stiffness, soreness, and spasms. The Melo was engineered to be lightweight and features 6 head attachments.Motor - Brushless (40-60db)Modes - 6 speeds 1000-3500 rpmInput - 110-240V (50/60Hz)Stall Force - 11 lb (5kg)Battery - Lithium (12.5V / 1500mAh)Output - 12V DCStroke Length - 0.35' (9mm)Battery Life - 2-3 HoursCharge Time - 4 HoursDimensions - 9”x 7”x 2”Weight - 1.14lb