Ascher sells a lot of these sets, and the appeal is simple: two lights for under $15 that charge from USB.
What the listing publishes
Front and rear lights, four modes, a 2,000 mAh battery in the front light, IPX4, silicone straps with four openings that fit most handlebars and seat posts, and a USB charge. No lumen figure appears.
What that missing number means
Without a lumen figure or a beam shape, you cannot compare this with the others here. Our reading is that it is a light to be seen by, on streets that already have lighting. If your ride includes unlit stretches, look at the NiteRider.
What to check before you buy
Keep the strap tight, because a strap mount can rotate on a rough road and point the beam at the sky. Fit the tail light where a bag or a jacket will not hide it.
Prices quoted in this text are dated readings and can differ from the live price in the buy box.
What we rate and what we flag
Strengths
More than 32,000 ratings on Amazon.com
A low price for a pair
No tools needed for the strap
Compromises
No lumen figure at all
Lower water rating than the Magicshine
Strap mounts can slip on thin bars
Specifications
Set
Front and rear
Modes
4: full, half, slow flash, fast flash
Front battery
2,000 mAh stated
Water rating
IPX4
Mount
Silicone strap with four openings
Material
Aluminum, plastic, silicone
Lumens
Not published
Model
HJ-040
The questions riders ask
How bright is it?
The listing does not publish a lumen figure. Treat this as a be-seen light, not one to see by on a dark road.
Can I use it in the rain?
It is rated IPX4, which covers splashing water. The Magicshine set on this shelf is rated IPX6.
Our score
7.3/ 10
A cheap be-seen set that does not claim much, and that is fine.
Who buys this one, among bike gear
Being seen on short city trips at the lowest cost.
Sources
Specifications: the manufacturer sheet for bike gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.