Small size basic parameters. Model: S-194-Small Lamp beads: P50 + white COB + yellow COB + red COB Lumen: 1800 Lighting mode. Front light: high brightness / low brightness / flashing Tail light: white high brightness / white low brightness / yellow high brightness / yellow low brightness / red light / red flashing Weight: 359g Size: 220*104*102mm Large size basic parameters. Model: S-194-Big Lamp beads: P70 + white COB + yellow COB + red COB Lumen: 2500 Lighting mode. Headlight: high brightness / low brightness / flashing Tail light: white high brightness / white low brightness / yellow high brightness / yellow low brightness / red light / red light flashing Weight: 549g Size: 290*124*116mm Product Features: "Double-head design"-the headlight adopts high-power XHP70 lamp beads, the lighting distance can reach 500 meters, suitable for long-distance lighting, the tail light adopts warm color COB lamp beads, the lighting range can reach 35 square meters, suitable for close lighting. "Large light cup design"-80mm large-diameter light cup to further strengthen the lighting distance of the light, more suitable for night adventure. "Built-in rechargeable lithium battery"-Built-in lithium battery, no need to replace the battery, more than 1000 times cycle charging, ultra-long life. "IP64 waterproof"-life waterproof, whether it is rainy, snowy, any bad weather can be used normally