Reelight 500
The 500 series mounts a generator at the axle hub, powered by magnets on the wheel. It is then wired to the light, which can be mounted on the handlebars (for the front version) or seat post (for the rear version). The light is high enough up to be visible, and requires no batteries or dynamo hub to run.
SL 550R
The 500 series mounts a generator at the axle hub, powered by magnets on the wheel. It is then wired to the light, which can be mounted on the handlebars (for the front version) or seat post (for the rear version). The light is high enough up to be visible, and requires no batteries or dynamo hub to run.
The SL550 version only has a steady burn mode, and does not keep running when the bike stops moving.
SL 550F
The 500 series mounts a generator at the axle hub, powered by magnets on the wheel. It is then wired to the light, which can be mounted on the handlebars (for the front version) or seat post (for the rear version). The light is high enough up to be visible, and requires no batteries or dynamo hub to run.
The SL550 version only has a steady-burn mode and does not continue running after the bike stops moving.
SL 520R
The 500 series mounts a generator at the axle hub, powered by magnets on the wheel. It is then wired to the light, which can be mounted on the handlebars (for the front version) or seat post (for the rear version). The light is high enough up to be visible, and requires no batteries or dynamo hub to run.
The SL520 version only has a flashing mode, and continues flashing up to 2 minutes after the bike stops moving.
SL 520F
The 500 series mounts a generator at the axle hub, powered by magnets on the wheel. It is then wired to the light, which can be mounted on the handlebars (for the front version) or seat post (for the rear version). The light is high enough up to be visible, and requires no batteries or dynamo hub to run.
The SL520 version only has a flashed mode, and continues flashing for up to 2 minutes after the bike stops moving.
SL 500R
The 500 series mounts a generator at the axle hub, powered by magnets on the wheel. It is then wired to the light, which can be mounted on the handlebars (for the front version) or seat post (for the rear version). The light is high enough up to be visible, and requires no batteries or dynamo hub to run.
The SL500 option only has a flashing mode, and does not continue flashing after the bike stops moving.
SL 500F
The 500 series mounts a generator at the axle hub, powered by magnets on the wheel. It is then wired to the light, which can be mounted on the handlebars (for the front version) or seat post (for the rear version). The light is high enough up to be visible, and requires no batteries or dynamo hub to run.
The SL500 version only has a flashing mode, and does not continue flashing after the bike stops moving.