3.7V ThawDaddy Dual USB Charger - Fast Charging for Smartphones, Tablets & More - Perfect for Travel, Home & Office Use

We only use the highest quality Lithium-ion batteries to ensure long lasting power and battery life. Our batteries are designed to power your Mobile Warming product for hours ensuring you stay warm and comfortable. This Charger is only compatible with Mobile Warming  3.7volt Thawdaddy vest or batteries.

Specifications:

• Output: DC 4.2V, 1.0A
• Input : AC 100v-240v