With four (4) cells in each Battery Pack, the Power Plus m4 is Hotronic’s most powerful, longest lasting FootWarmer!
* Powered by high capacity, cold temperature operation, NiMH cells.
* Four (4) temperature-duration settings.
* Settings adjusted by easy to use, push-button controls.
* Easy to read Battery Pack LEDs indicate setting selected and power on / off.
* Battery Packs easily attach to secure area of footwear.
* Battery Packs m4 contain four (4) cells for extended duration.
* NiMH cells do NOT have “memory effect” and do NOT require fully discharging before fully recharging.
