Description: 3 flash modes 2 high quality lens 400lm bright Easy to install Quick release Daily waterproof Durable & fine workmanship Specifications Material: plastic Color: red + black Type: Horizontal/ vertical LED: 0.5W/pc Lumens: 400 3 modes: Flashing, one LED light on, two LED light on 1 LED: working time is up to 15 hours. 2 LED: working time is up to 30 hours. Flashing: up to 60 hours. Power supply: 2 x AAA Batteries (not included) Waterproof level: daily life waterproof Size: 7 x 3.5 x 3 cm (L x W x H) Weight: 35g Specifications: 3 flash modes 2 high quality lens 400lm bright Easy to install Quick release Daily waterproof Durable & fine workmanship Package Included: 1x tail lamp 1x clip mount set Notes: Due to different computer screen, the color of the actual items may slightly different from the listing images. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a message before you give the bad feedback, if the products have some problems. Thanks for your understanding.