ISEYOU SJB87 500-lumen rechargeable running light

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Product guide

ISEYOU SJB87 500-lumen rechargeable running light

ISEYOU SJB87 is a rechargeable chest running light with an adjustable beam and reflective straps for night-time outdoor use. Its six lighting modes and USB-C charging suit runners and walkers who want both forward illumination and a reflective harness, while the listed battery-life claims differ by mode and listing field.

At a glance

Six modes are specified: four white light settings and two red safety settings, with a memory function claimed.
The front beam can be angled up to 45° to direct light towards the path.
The reflective straps and board are intended to add visibility around the wearer.
The built-in battery is described as non-removable and rechargeable by USB-C.

Price

£17.55Save 24%

Reference price: ~~£22.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Six stated lighting modes combine a forward white beam with red constant and flashing modes.
Adjustable chest and shoulder straps are specified, with a claimed waist adjustment range of 31–51 inches.
USB-C charging and an included USB cable are listed.

Technical specifications

21 specifications

Identity
Brand	ISEYOU
Model	SJB87

Light and modes
Maximum light output listed	500 Lumens
Beam angle	45 Degrees
Colour temperature	6500 Kelvin
Lighting modes	4 white modes (High/Medium/Low/Flash) and 2 red safety modes (Constant/Flash)
Light path distance listed	90 Metres
Power	3.3 watts

Power and battery
Power configuration	Battery Powered
Battery type	Lithium Ion
Battery capacity claimed	1800mAh
Battery life listed	25 Hours
Runtime by mode claimed	4-9 hours of illumination in white light mode and up to 16 hours in red light mode
Charging	USB-C

Dimensions and mounting
Mounting types listed	Chest and Head Mount
Weight listed	236 Grams
Waist strap adjustment claimed	31–51 inches (80–130 cm)
Shoulder strap adjustment claimed	12–24 inches (30–60 cm)

Materials and protection
Water resistance listed	Water Resistant
Material listed	Abs
Waterproof rating claimed	IPX4

What to know before buying

Listing details to confirm

Battery duration claims conflict: the details list 25 Hours, while the feature text claims 4-9 hours in white mode and up to 16 hours in red mode. Confirm which runtime applies to your intended setting. The listing also gives a 90 Metres light path distance in specifications but claims illumination up to 300 feet in the feature text, so the effective distance is inconsistent. The 500-lumen output and IPX4 waterproof wording are listing claims, not independently verified measurements.

What’s in the box

Included

Running light (1)
USB cable

Who is it for?

A good fit for

Runners and walkers seeking a chest-mounted light with reflective straps for dark roads or paths.
Cyclists and hikers who want angle-adjustable illumination and multiple light modes.

Less suited to

Buyers who need a confirmed runtime for a specific lighting mode or a verified beam distance.

ISEYOU SJB87 500-lumen rechargeable running light · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 1,302 ratings

5 stars72%72%
4 stars12%12%
3 stars8%8%
2 stars2%2%
1 star6%6%

Customer feedback highlights path illumination, usefulness on poorly lit roads, a secure adjustable fit and easy charging. Battery life, stability and value receive mixed reactions. This feedback is relevant for night running, but does not resolve the listing's conflicting runtime figures or establish a guaranteed fit or performance.

Positive themes

Customers report that it illuminates paths well and that the adjustable straps can hold securely.
Customers describe it as easy to charge and a good fit.

Mixed feedback

Battery life and value for money receive mixed feedback.
Stability also receives mixed feedback.

Frequently asked questions

How long does the battery last?

The listing gives a general battery-life figure of 25 Hours, but also claims 4-9 hours in white-light mode and up to 16 hours in red-light mode. These figures are inconsistent, so check the expected runtime for your chosen mode.

What lighting modes are listed?

The listing describes four white modes—High, Medium, Low and Flash—and two red modes, Constant and Flash. It also claims a memory function.

Can the beam be angled?

Yes. The front light is listed with a 45 Degrees beam angle adjustment.

What comes in the box?

The stated contents list includes one running light and a USB cable.