PORTABLE AND UNIQUE - Ergonomic design pebble shape and size make you more comfortable to grip, easy to carry. Warm your hands and charge your phone when you go out in cold winter. It's a perfect gift for family and friends.
FAST HEATING & 3 LEVELS - Press the switch and instantly release the warmth for you. Rapidly warm up double sides in seconds. 3 levels of temperatures 95-107°F/104-118°F/118-131°F at your choice.
LARGER RECHARGEABLE BATTERY - The reusable hand warmer built-in 5200mAh lithium ion battery, continuously warm your hands for 4-8 hours, charge your phone 1-2 times.
SAFE & HEALTHY - Made of eco-friendly lithium battery, high-tech aircraft-grade aluminum and ABS material. Shockproof, Anti-scald, Anti-skid, Explosion-proof, Radiation-free. It not only cold hands relief, but also helps soothe the uncomfortable of menstrual, sufferers with arthritis pain.
PERFECT GIFT - It's a MUST HAVE to spend a cold winter, especially for raynauds arthritis sufferers for heat therapy needs.