On the trail, at the job site, in the classroom, or simply sitting at home relaxing the Celestron Elements ThermoTank 3 will keep your hands toasty warm with a maximum temperature of 113F. Unlike single use chemical hand warmers, the ThermoTanks lithium ion battery can be recharged and used again and again, saving you money over time. ThermoTank 3 provides up to 4 hours of continuous heat on a full charge. The unit was thoughtfully designed with an ergonomic form factor to provide maximum contact with your hands. ThermoTank 3 provides scent-free heat that is undetectable to wildlife.

• Durable, aluminum housed, long-lasting, rechargeable hand warmer
• 3000 mAh lithium battery provides up to 4 hours of continuous heat
• Ergonomically designed to provide maximum contact with your hands
• Convenient size easily fits in your pocket, purse, glove compartment or bag pocket