Serfas USL-900 E-LUME 900 Headlight
Serfas USL-900 E-LUME 900 Headlight
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SKU:ACLI0229
The Serfas USL-900 E-LUME 900 Headlight is a powerful and feature-packed bike light designed to turn night into day. It has a compact and lightweight aluminum design and produces a super bright output of 900 lumens. The headlight has an IPX4 water resistant rating and a new 3 level battery life indicator. It also has a last memory mode and a max charge rate of 1.5A, allowing it to charge from dead to fully charged in just 2 hours using a 1.5A rated charger. The headlight has solid modes with a runtime of 1.5 hours on overdrive, 3 hours on high, 3.5 hours on medium, and 9 hours on low, and flash modes with a runtime of 50 hours on daytime flash and 30 hours on low flash. It weighs 162 grams with the bracket and is powered by an LG® 1-cell Li-Ion, 2600mAh battery. The package includes a micro USB cord and a handlebar mount. Upgrade your cycling experience with the Serfas USL-900 E-LUME 900 Headlight.
What Size?
Finding the right size bicycle is important for a comfortable and enjoyable ride. There are various frame sizes available that are designed to fit riders of different heights, as well as different wheel sizes and frame styles. To choose the best fit, you can look at the sizing and geometry chart provided by the manufacturer. This will show you the seat tube length and top tube length, which can affect the stand-over clearance and comfort of the bike. You want to aim for a comfortable position that isn't too cramped or stretched out. If you have any questions about finding the right size bike for you, our team of experts is always happy to help.
| Child height (Inch) |
Child height (cm) |
Wheel size |
|
2’9”-3’1″ |
85-90 cm cm | 10/12 inches |
| 3’1”-3’3″ | 90-100 cm | 12/14 inches |
| 3’3”-3’7″ | 100-110 cm | 14/16 inches |
| 3'7"-3'8" | 110-115 cm | 16/18 inches |
| 3’8”-4’0″ | 115-120 cm | 18/20 inches |
| 4'0”-4’5″ | 120-135 cm | 20/24 inches |
| 4'5"-4'9" | 135-145 cm | 24/26 inches |
| 5 inches+ | 145 cm + | 26 inches |
|
Adult height (Inch) |
Frame Size (Inches) | Frame size |
| 4'10-5'2" | 13 - 14" | X-Small |
| 5'2-5'6" | 15 - 16" | Small |
| 5'6-5'10" | 17 - 18" | Medium |
| 5'10-6'1" | 19 - 20" | Large |
| 6'1-6'4" | 21 - 22" | X-Large |
| 6'4-6'6" | 22 - 24" | XX-Large |
|
Adult height (Inch) |
Frame Size (Inches) | Frame size |
| 4'10-5'2" | 47-48 cm | XX-Small |
| 5'2-5'6" | 49 - 50 cm | X-Small |
| 5'3-5'6" | 51 - 53 cm | Small |
| 5'6-5'9" | 54 - 55 cm | Medium |
| 5'9-6'0" | 56 - 58 cm | Large |
| 6'0-6'3" | 58 - 60 cm | X-Large |
| 6'3-6'6" | 61 - 63 cm | XX-Large |