Fourheart Rechargeable Hand Warmers,Double-Side Heating Gift for Raynauds Arthritic Sufferers Pain Relief, Ski, Hunting…

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SAFE FOR USE — Rechargeable Hand Warmers Certificated with CE,FCC. Made of high-tech aircraft-grade aluminum and ABS matrial, eco-friendly polymer battery. Shockproof, Anti-scald, Anti-skid, Explosion-proof
GOOD SECURITY — The optimized and upgraded circuit completely eliminate all kinds of poor contacts to ensure the lifetime of Four Heart reusable hand warmer and provide protection against over discharging, over charging, overheat, and short circuit
1-3s HEATING — Double side heating and 3 temperature settings: 107°F(42°C)/118°F(48°C)/131°F(55°C). Warm your hands in 1-3 seconds. Press the switch and instantly release the warmth for you
LARGE BATTERY CAPACITY — 5200mAh lithium ion rechargeable battery with USB/usb Type-C charging port ensures fast charging. It can also used as a spare power bank to charge your electronic device(when needed)
BEST GIFT——Double sided heating,perfect winter gifts, especially for Raynaud’s.Perfect handhold and pocket size, micro USB/USB-C/Android charging port