Quick Summary
The Defurhome HJ-040 is a two-piece USB-rechargeable bicycle light set with a front headlight and a rear taillight. The headlight has a built-in 2000 mAh battery and the taillight a 330 mAh battery. Both lights have four modes: full brightness, half brightness, fast flashing and slow flashing.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Set | One front headlight and one rear taillight, providing a light for each end of the bicycle. |
| Model | HJ-040 by Defurhome. |
| Battery and charging | Both lights are USB-rechargeable. The headlight has a built-in 2000 mAh battery and the taillight a 330 mAh battery. No operating runtime or charging time is specified. |
| Lighting modes | Four modes: full brightness, half brightness, fast flashing and slow flashing. |
| Water protection | Rated IPX4. The product information says not to put the lights directly into water; IPX4 is not a submersion rating. |
| Mounting | The headlight has a handlebar mounting bracket. Silicone straps are described as fitting around most seat-post sizes. |
What to Compare Before Buying
No lumen output is given, so the mode descriptions do not provide a measured brightness figure. If you need to compare light output, look for a stated lumen rating. Battery capacity is listed, but it does not specify how long either light will operate between charges; runtime and charging time are also unstated.
USB charging is specified, but the connector type and whether charging cables are included are not. Check the set contents if you need a cable or a particular connection.
Compatibility, Size and Fit
The headlight bracket is intended for a handlebar, and the silicone straps are described as fitting around most seat-post sizes. Check the mounting points on your bicycle and allow for any other equipment fitted in those positions. The stated fit does not guarantee compatibility with every handlebar or seat post.
A Quick Pre-Ride Check
Before a ride, check that each light is attached at its intended position and try its four modes so you know how to select them. Check the bracket and straps are secure, and follow any instructions supplied with the lights.
Before You Decide
Check that the mounting arrangements suit your bicycle and consider whether the unspecified runtime and measured brightness meet your requirements. The lights are rated IPX4 and should not be immersed in water.
