Our newly designed Standard Battery/Charger Pack with Handheld Controller is smaller than our previous standard battery. This compact battery allows for a heating time of up to 4.5 hours and comes with a hand held controller. The Controller fits and can be operated in the pocket of Blazewear garments, taken out and held or can comfortably fit into the pocket of any clothing you are wearing. Note that this battery can only be operated with the hand held controller. Try out our Standard Battery/Charger Pack with Handheld Controller to see if this compact, sleek battery is right for you!