Elements ThermoCharge 
The Celestron Elements ThermoCharge is a 2-in-1 hand warmer and phone charger. This durable, rechargeable, portable device is perfect for travelers, hikers, and anyone who spends time outdoors.
 
Hand Warmer
The ThermoCharge hand warmer heats up quickly and maintains a maximum heat of 113°F (45°C) for up to 6 hours on a full charge. The ergonomic design fits comfortably in your hand and stores easily in its included carrying pouch, a pocket, or bag.
 
Rechargeable 
Unlike single-use chemical hand warmers, the ThermoCharge is safe, scent-free and rechargeable; just plug it into any USB charging port. The size and weight of the ThermoCharge make this device 100% portable. Its durable aluminum design and reinforced silicone caps make it perfect for colder weather conditions. 
 
Power Pack
If your electronic devices start to lose their battery life, the ThermoCharge’s power pack can provide extra power to most smartphones, MP3 players, cameras and many other USB-powered devices. Celestron's lithium-ion battery technology is quality-tested to last for hundreds of charge cycles.
 
General Features
2-in-1 device: portable power pack and hand warmer 
4400 mAh rechargeable battery provides 6 hours of continuous heat 
Charges smartphones, MP3 players, cameras and many other USB-powered devices in less than 2 hours
Durable, aluminum housing with protective silicone caps 
Ergonomically designed to fit easily in your pocket or bag
Bundle includes two USB charging cables and two soft carry pouches
Status LEDs for battery capacity, charging the external device, and handwarmer function
Max temperature: 113°F