Battery packs are small enough to be out of the way and long lasting. All in all a great set up.
The second battery makes it possible for me to play 18 holes in pretty cold weather while keeping my hands warm. Great product.
Warm hands. No hassles. (I would skip the military model - my wife has the regular model and it is fine.)
Use the G-Tech Hand Warmer for golf in the cold mornings. The spare battery is great to have just in case it's needed. Usually I'm not on the course for more than a couple of hours. Great to have if it's needed. Wish I had gotten the Hand Warmers when winter first started. They work great. Hate having cold fingers when I'm playing golf. Gloves just don't keep the fingers warm enough. Wrapping my fingers around the heated coils is great. Thanks G-Tech!
It is great to have a second battery ready to go after a cold golf game and head out to a football game that evening!