Serfas SL
The SL series is similar in design to the USL series, but uses non-rechargeable alkaline batteries instead of integrated USB-rechargeable lithium batteries.
SL-255
![flash mode: True](https://static.bikelightdatabase.com/lights/icons/flash.png)
![Serfas SL-255](https://static.bikelightdatabase.com/media/lights/cover/SL255.jpg.300x200_q80.jpg)
The SL series is similar in design to the USL series, but uses non-rechargeable alkaline batteries instead of integrated USB-rechargeable lithium batteries.
The SL-255 is part of Serfas's redesigned commuter headlight line to be available in 2015. The light features side visibility ports, a lower weight than Serfas' previous lights, and uses removable AA batteries.
SL-155
![flash mode: True](https://static.bikelightdatabase.com/lights/icons/flash.png)
![Serfas SL-155](https://static.bikelightdatabase.com/media/lights/cover/SL155.jpg.300x200_q80.jpg)
The SL series is similar in design to the USL series, but uses non-rechargeable alkaline batteries instead of integrated USB-rechargeable lithium batteries.
The SL-155 is part of Serfas's redesigned commuter headlight line to be available in 2015. The light features side visibility ports, a lower weight than Serfas' previous lights, and uses removable AA batteries.