Cordless massager provides vibration and percussion to help decrease pain, soreness and stiffness; facilitates capillary proliferation and helps increase superficial blood flow and circulation to speed up warm-up and recoveryBluetooth-enabled to connect to the optional Addaday app, which guides you through therapies and does the thinking for you.5 interchangeable heads address different pressure intensities and fascial distortionNonslip rubber grip makes it easy to use even for users with smaller handsStall Force technology helps avoid damaging soft tissueDesigned and tested in the USA by medical doctors, chiropractors, physical therapists and professional athletesTwo-hour battery life at maximum intensity or four hours at the lowest intensityProtected by a 1-year manufacturer warranty