Topeak WhiteLite HP 2W
The Topeak Whitelite HP 2W is high intensity and long burn times in a lightweight, economical package. Super bright 2 watt LED provides up to 180 Lumens. Machined aluminium housing is watertight and finned for cooling. The stem-mounted Li-Ion rechargeable battery features an on-board RISC processor for up to 10.5 hours of run time with 40 minutes of reserve at 1 watt.
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