The Eneloop Kairo by Sanyo is a rechargeable battery-powered hand-warmer designed to keep your hands toasty on those long walks on the frozen tundra. It features two preset temperatures: 39 and 43 degrees Celsius. The Kairo weighs only 80 grams including the internal lithium ion battery. A single 6 hour charge will provide around 5 hours of operation. Available in white, pink, and black for just 4,000 yen ($ 38.54). [Dvice]
