Quick Summary
The SerDa-Run 2 in 1 Light Up Dog Collar + Tag is a USB rechargeable LED dog collar with three light modes. It is 70 cm long and can be cut to fit, which makes the exact finished size an important check before you buy.
The collar is described as visible in the dark, with fast flash, slow flash and steady light settings. It is also described as waterproof for everyday rain, but not suitable for swimming or immersion.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Product type | Light up dog collar + tag. Check that this is the version you want, as it combines a collar and tag in one item. |
| Length | 70 cm. The collar can be cut to size, so measure carefully before trimming. |
| Light modes | Three modes: fast flash, slow flash and steady light. Compare the mode pattern with how you want the collar to appear. |
| Charging | USB rechargeable with a lithium ion battery and a stated full charge time of 1 hour. |
| Water protection | Described as waterproof for everyday rain, but not suitable for swimming or immersion. |
What to Compare Before Buying
- Finished size: The collar starts at 70 cm and can be cut to size. Check the fit needed before trimming.
- Light mode: Choose between fast flash, slow flash and steady light depending on the look you want.
- Charging setup: It charges by USB, so check that you have a suitable charging method available.
- Water use: It is described as suitable for rain only, not swimming or immersion.
Before You Decide
Confirm the finished size before cutting, and make sure the 70 cm length suits the collar fit you need. Check that the three light modes and USB charging match your preference, and remember that it is not intended for swimming or immersion.





