3.7V LITHIUM BATTERY with H/M/L temp. controllor

FEATURES

The high performance handy Lithium Ion battery set works efficiently for long time outdoor usage.
It lasts for 3 to 15 hours averagely. It can be charged by AC charger without battery memory effect and is rechargeable for over 500 times. It is environment friendly and saves you a lot of money.

Controlled technology and single button 3 scales temperature - High,Medium,Low with LED indicator.