The Author Stake Mini USB SET is designed as compact universal flashing lights with rechargeable Li-ion battery. There is no problem to fix them on bicycle, stroller or as a clothing accessory. Stake Mini USB increase your visibility and safety level easily and quickly. Rechargable Li-ion battery (500 charging cycles). Steady mode 12 lm – 4h. Flashing modes 12 lm – 11 h (slow flashing, quick flashing and strobe). Universal tool free fixation for diameter 15 –35 mm even the unround profiles (2 sizes O-rings inludes the packing). Charging cable included (USB A / Micro-B). ↓↓↓# light rechargeable # USBwhere to buyphotogallerydownloadproduct options Photogallery Download charging [ pdf, 454 kB ] Product options black24"-28" = UA#12040140