This is the SERFAS E-LUME 350. It has a maximum of 350 lumens, so I think it's bright. It's bright and compact, so I think it's very useful as a handheld light for night walks, etc. How about it for the coming season? Color: Black Brand: SERFAS Material: Aluminum Power Source: Battery-powered Water Resistance Level: Waterproof Item Weight: 0.13 kilograms Just one of these is enough for a night walk along the riverbank. Durable aluminum body with high heat dissipation. USB-C rechargeable. Battery: 1400mAh Li-ion Runtime: Overdrive 350 lumens 65 minutes, High 250 lumens 2 hours, Medium 100 lumens 4 hours 15 minutes, Low 50 lumens 8 hours, Low Flash (blinking) 50 lumens 14 hours, Daytime Flash (blinking) 350 lumens 45 hours Body size: 88.5mm L x 31mm W x 22.5mm H Maximum brightness of 350 lumens. IPX6 level waterproof specification. Body only. Operation has been confirmed. There are some minor scratches, but it has been used infrequently and is in relatively good condition. Please understand that this is a used item and that it has been stored at home before purchasing.