PROS:

– Incredibly fast heating time

– Device comes with lots of initial charge

– Only one simple button, for convenience

– Includes three warmth levels, low, medium, and high

– Quick rechargeable usb inputs

– Comes with with a pouch and strap, for attachment to your arm, bag, etc

– Usb output for general device charging

– Perfect hand warmer for arthritis, cold environments, etc

– Easily portable and pocket sized

– Large, doubled sided area for big and small hands

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CONS:

– Comes with lanyard, which unfortunately cannot be attached to the device

– Charges at a regular speed compared, to phone outlets etc

– Battery can drain fairly fast when using a high heat level