Stay warm on the trail with the ThermoTrek hand warmer. The 4400 mAh lithium ion battery provides up to an impressive 6 hours of continuous heat on a full charge. ThermoTrek heats up quickly and reaches a maximum temperature of 113°F (45°C).
Unlike chemical hand warmers, ThermoTrek can be recharged multiple times. Just plug it into the USB port on your PC or a compatible AC charger using the included cable. The rugged aluminum construction and protective silicone caps make ThermoTrek perfect for cold weather excursions like cross-country skiing and mountaineering.
Durable, aluminum housed, long-lasting hand warmer with protective silicone caps
4400 mAh lithium battery gives up to 6 hours of continuous heat
Charges via USB 2.0 for reuse
Ergonomically designed to fit easily in your pocket, glove compartment or pack
Includes USB charging cable and soft carry pouch
Dimensions 44.9 mm x 94.6 mm x 22.9 mm (1.76" x 3.72" x .9")
Input voltage 5V- 500 mA
Status LEDs (1) charging, (1) in use
Temperature max 40°C to 45°C (104°F to 113°F)
End caps Silicone caps for protection
Weight (oz) 5.22 oz (148 g)