BLITZU USB-C Rechargeable Bike Tail Light 2 Pack, Bright Bicycle Rear Cycling Safety Flashlight Accessories for Night Riding, Cyborg 120T, 4 Light Modes for Adults Kids Men Women Road Mountain

What it is and why I tried it

If you ride in traffic, a dependable rear light isn’t optional—it’s part of the core kit. I’ve been running the Blitzu tail light as a daily rear flasher on commutes and weekend rides to see where it lands among value-focused USB-C options. It’s sold as a two-pack, and each light is compact, lightweight, and built around a bright red LED strip with simple controls, four modes, and a flexible mounting system that works on bikes, helmets, and bags.

Setup and mounting

Installation is straightforward. Each light ships with a rubber strap mount and an integrated clip. The strap stretches to fit a wide range of seatposts and stays, including smaller rack tubes and oval posts. There’s a hinged base that lets you tilt the light up or down in small “click” increments, which makes it easy to aim the beam level to the road behind you. I’ve also used the clip to attach the light to a saddle bag and a backpack strap when I’m off the bike.

Two details I appreciate:
- The light slides off the base for charging without removing the strap, so once you’ve found a secure position you can leave the mount in place.
- You can run the light vertically or horizontally. Mounted vertically, I found side visibility is notably better.

Overall, the mounting system is more versatile than most at this price. It’s also quiet—no rattles—and has held position on rough pavement and gravel.

Modes, interface, and visibility

The Blitzu offers four modes: two steady settings (high and low) and two flash patterns (a standard blink and a faster strobe). A single long-press turns it on or off; quick presses cycle modes. The button is large enough to operate with light gloves, and the mode changes are predictable—no long sequences to chase through.

As for brightness, this light is designed for visibility rather than road illumination, and it does that job well. The LED strip throws a broad, even glow that’s easy to pick up from a distance. The standout is side visibility: the translucent body bleeds light outward, so drivers approaching from oblique angles still see a strong signature. In steady-high it’s punchy enough for dawn/dusk rides; in the faster strobe it works as a daytime running light, though it’s not as piercing as top-tier, high-lumen daytime-specific tail lights. For urban and suburban riding, I felt confidently visible.

Aiming matters. If you angle it too far up or down, you can dull the direct cone of light behind you. Using the tilt hinge to keep it roughly horizontal (or vertical orientation with the strip aligned) maximizes both rear and side conspicuity.

Battery and charging

Charging is via USB-C, which is a welcome upgrade from micro-USB. From empty, a full charge took me a bit under two hours with a standard wall adapter. Runtime will vary by mode and temperature; my real-world numbers were:

• Steady high: roughly 2.5–3 hours
• Steady low: around 6 hours
• Flash (regular): about 7–8 hours
• Flash (fast strobe): just under 10 hours

Those numbers align with a product pitched at “up to 10 hours” in its most efficient mode. In practice, I run flash for daytime and low or flash at night depending on traffic. For an hour-long commute, I can go several days between charges on flash. If you prefer steady-high for the full ride, plan on topping up more often.

There’s a small status light near the port that indicates charging, which helps avoid guessing when it’s ready to go. A minor nit: like many compact lights, there’s no battery percentage readout, so you learn the cadence of your own usage over time.

Weather resistance and durability

I’ve ridden with the Blitzu in steady rain and through a couple of splashy bike-wash sessions. The port cover seats firmly, and I’ve had no moisture issues or flicker. The housing is fully sealed, and the button has a reassuring, rubberized feel that keeps out grit.

Build quality is good for the price bracket: tight seams, a sturdy hinge, and a mount strap that hasn’t stretched out after repeated use. The lens does scuff more easily than premium units with harder plastics; after a few tosses into a bag with tools, I picked up some fine scratches. They’re cosmetic and don’t affect output, but if you care about aesthetics you might keep the lens away from metal objects or mount it permanently on the bike.

Everyday use

Over a few weeks, the Blitzu has become my “set-and-forget” rear light. I typically leave one strapped to the seatpost and stash the second in a saddle bag as a backup or clip it to a backpack when I’m running evening errands on foot. The sliding quick-release is genuinely handy—no fiddling with straps at charging time—and the hinge prevents the common problem of lights pointing at the ground after a pothole.

A couple of practical tips from daily use:
- Mount it vertically if you want the best side visibility. The diffused glow is more prominent that way.
- For daytime, use the faster strobe; for night, either low steady or the gentler flash pattern is noticeable without being harsh to riders behind you.
- If you ride gravel or rough urban routes, tilt the light slightly upwards to compensate for saddle-sag and bumps so your beam stays level.

Limitations and trade-offs

This is a compact safety light, and it behaves like one:
- On steady-high, it won’t run a full long-distance ride without a charge. If you need all-day steady output, bring the second unit or plan a mid-ride top-up.
- The lens is more prone to cosmetic scratching than some competitors. It doesn’t affect function but is worth noting.
- There’s no ambient light sensor or advanced battery readout—simplicity keeps the price and weight down, but you give up those extras.

None of these were dealbreakers for me given the price and the fact that you get two lights in the box.

How it compares

In the budget-to-midrange class, many rear lights either use older micro-USB ports or have limited mounting options. The Blitzu’s USB-C charging and tilt-adjustable, multi-orientation mount make it easier to live with day to day. Pure brightness kings exist at higher prices, especially for daytime running in bright sun, but they’re larger and heavier. The Blitzu aims for the sweet spot: compact, very visible from the rear and sides, and simple to use.

Who it’s for

• Commuters who want a reliable, rechargeable rear light with strong side visibility
• Riders who swap lights between bikes, helmets, or bags and value a flexible mount
• Families outfitting multiple bikes who appreciate a two-pack and USB-C convenience
• Anyone who rides in mixed conditions and needs a water-resistant unit that just works

If you’re racing or need maximum daytime punch in bright, wide-open conditions, you may want a higher-output model. For most road, gravel, and city riders, this covers the essentials well.

Verdict

The Blitzu tail light nails the fundamentals: it’s bright where it needs to be, especially from the sides; it mounts securely to almost anything; it charges via USB-C; and it’s comfortable in bad weather. Battery life is solid on flashing modes and adequate on steady-high, and the two-pack format adds flexibility and value.

I recommend it. It’s an easy, affordable way to add reliable rear visibility to one or more bikes, and the mounting and charging experience is better thought out than many options in its class. If you prioritize compact size, versatile mounting, and side conspicuity over bells and whistles, this one earns a spot on the seatpost.