Feature:1. HIGH EFFICIENCY: Fiber optic fusion splicer heating furnace, horizontal type, fast heating in 18 seconds, which is efficient and practical.2. 4 GEAR ADJUSTMENT: The heating furnace has 4 gears adjustments, 1 gear 130, 2 gear 150, 3 gear 170, 4 gear 190 , meeting different needs.3. EASY TO OPERATE: Place the external heating furnace next to the fusion splicer, connect the plug, automatic fusion welding, improving efficiency.4. PREHEATING FUNCTION: The fiber optic fusion splicer heater has preheating function, can be used in low temperature weather, faster heat shrinkage.5. ALUMINIUM ALLOY: The heating furnace is made of aluminum alloy, which is erosion proof, has good heat dissipation and long service life.Specification:Item Type: Fusion Splicer HeaterModel: YT 6Battery: 1 x Li Battery 5200mAh (builtin battery)Product Material: Aluminum AlloyFunction: 18s fast heating, 4 gears adjustableGear: 1 gear 130, 2 gear 150, 3 gear 170, 4 gear 190.Package List:1 x Heating Furnace1 x Charger1 x Storage Box