Features:

• Approximately 7-10 hours of heating time
• High and Low heat settings
• Heat temperature range: 100-113°F
• Operating temp range: 14-113°F
• Charge time: approximately 5 hours
• Li-batteries are rechargeable up to 500 times
• Light indicator
• AC charger or USB power

Specifications:

• Input voltage:  5V-1A
• Li-batteries: 3.7V 2600mAh
• Width: 2.6"
• Depth: 3.57"
• Height: 0.8"
• Package dimension (W x L x H) 6 x 6.5 x 1.5 in
• Net weight (unit only):  3.175 oz.