Double-sided three-dimensional heating, 360 dead-angle warmth Double-sided heating technology: front and back double-sided synchronized heating, covering the palm and the back of the hand, quickly dispersing the cold, suitable for outdoor camping, hiking and other low-temperature environments. Graphene efficient heat conduction: Adopting graphene heating film, 3 seconds quick heating, heating speed is enhanced, heat is evenly distributed to avoid localized overheating. Three-stage temperature control adjustment: 40/50/60 three temperatures can be selected to meet the needs of different scenarios, low-temperature range is more durable, high-temperature rapid warming. Fast charging + high-capacity battery, worry-free outdoor 8000mAh high-capacity battery: under full charge, it can last 12 hours in low temperature and 6 hours in high temperature to meet the needs of all-weather camping. Type-C fast charging: support 2A fast charging, 2 hours full, rechargeable treasure, car power can be charged, no need to worry about power outage outdoors. Dual-use: built-in smart chip, can charge your cell phone in case of emergency, solve outdoor cell phone power anxiety. Outdoor waterproof and drop-proof, durable and build-resistant IPX4 level waterproof: splash-proof design, to deal with light rain, snow and water while camping, safe and worry-free. Drop-proof silicone shell: high-strength silicone wrapped, anti-drop, anti-squeeze, not easy to be damaged by outdoor bumps. Anti-slip texture design: Anti-slip texture of the shell, solid grip, avoid hand slipping and falling.