- Rechargeable LED rear light for bicycle, compatible with all types of bicycles - 5 light modes: strobe (9h), slow strobe (56h), meteor flash (14h), Tai Chi flash (17h), breathing flash (8h) - IPX5 certification: water resistant, optimal performance in heavy rain - 220mAh lithium battery, rechargeable via micro USB (cable included), avoids frequent replacements - Easy and quick installation without tools, adaptable to saddle, helmet, or backpack - Lightweight, compact, and durable design in black color - Ideal for improving visibility and safety in urban cycling, MTB, and night rides