Bookman Block Light Rear Black USB-C

Block Light from Stockholm-based Bookman is a compact, rechargeable rear light for your bicycle, featuring modern LEDs and a lithium-ion battery. It is small and discreet on the bike, yet bright enough to make you clearly visible in traffic.

The updated Block Light features USB-C charging and a new lens that distributes the red light evenly. The light delivers up to 18 lumens and has four modes with steady or flashing light at two brightness levels. At the highest steady setting, the runtime is approximately 1.5 hours, while the weaker flashing mode provides up to 25 hours. An indicator warns when the battery is running low.

The mounting is typically Bookman: the rubber strap wraps around the seatpost and locks directly into the light, with no separate mount or tools required. This makes it easy to remove, move between bikes, or slip into your pocket when you leave the bike.

Block Light Rear fits virtually any bicycle where you want a small rear light that is quick to mount, easy to charge, and takes up no more space than necessary.

Quick Specs

• Type: Rechargeable rear light
• Brightness: Up to 18 lumens
• Light modes: 4 – steady and flashing at two brightness levels
• Runtime: 1.5–25 hours depending on the mode
• Charging: USB-C
• Charging time: Approximately 2 hours from an empty battery
• Battery indicator: Warns when the battery level is low
• Dimensions: 35 × 23 × 14 mm, excluding strap
• Mounting: Rubber strap around the seatpost
• Color: Black
• Package contents: 1 × Bookman Block Light Rear
• USB-C cable: Not included