One large unit. Equipped with integrated rechargeable Lithium-ion polymer battery. USB wall charger and cord. Charges in 4 hours or less. Thin and lightweight. Easily turn off at the touch of a button. Up to 6 hours of constant heat per charge. Three temperature settings reaching up to 116 degrees. Recharges over 500 times. Shock and water resistant. Hang packaged.
 
Lithium Ion contained inside item.
 
 
May not ship to Australia.