Nielfoi Blue LED Icicle Lights, 33 ft, 400 LEDs

LEDs: Nielfoi LED Icicle Lights are a 33-foot, blue, corded string-light set for indoor or outdoor holiday displays. The listing describes eight lighting modes, a timer, memory, and end-to-end connection for up to three sets, while advising protection of the plug from water.

At a glance

The listing specifies 400 blue LEDs across a 33-foot linear strand with hanging drops.
Eight lighting patterns include steady-on, chasing, twinkle, and fade options. A timer is described as six hours on and 18 hours off, with memory for the last mode.
End-to-end connectors are claimed to support up to three connected sets. The listing says connected sets synchronize.
The product is listed for indoor and outdoor use, with a corded power supply.

Price

$19.99Save 33%

Reference price: ~~$29.99~~

Price checked: Nov 13, 2026

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Pros and cons

Pros

Blue LED color and icicle-drop layout offer a defined look for eaves, railings, walls, and similar display areas.
Timer and mode memory can reduce repeated manual setup, according to the listing.
The stated maximum of three connected sets may simplify extending a display from one outlet.

Technical specifications

19 specifications

Identity
Brand	Nielfoi
Model	BG-CL3M3-306L01
Color	Blue
Light source	LED
Number of light sources	400
Occasions	Christmas, Halloween, Thanksgiving, Wedding

Lighting and controls
Lighting modes	8 Lighting Modes, Connectable, Energy Saving, Timer, Waterproof
Listed control method	Touch
Bulb shape size	S6

Power and connection
Power configuration	Corded Electric
Voltage	29 volts
Wattage	6 watts
Wireless connection listed	US Plug

Dimensions and installation
Length	33 feet
Form factor	Linear with drops
Weight	0.67 kg
Indoor/outdoor use	Indoor, Outdoor

Materials and protection
Water resistance listed	Waterproof
Materials	Copper, Plastic

What to know before buying

The listing says the lights are waterproof but specifically advises protecting the plug from water. Use outdoor placement only with that limitation in mind.
The adapter button is described as the control for selecting modes and setting the timer. The specifications separately list Touch as the control method, so the actual control interface is not fully clear.

Listing details to confirm

Customer feedback includes mixed reports about reliability and durability, including both lights continuing to work and reports of partial failure or short life. This matters for buyers relying on a season-long display, despite the listing's durability claims.

What’s in the box

Included

Icicle string lights
UL Certified Adapter
Manual

Who is it for?

A good fit for

Buyers seeking blue icicle-style lights for seasonal indoor or outdoor displays.
People who want several lighting patterns and a built-in timer rather than a single steady setting.
Decorators planning to extend a display with compatible end-to-end connections, within the stated three-set maximum.

Less suited to

Buyers who need battery-powered or wireless lights.
Anyone who needs an outdoor setup where the plug itself can be exposed to water.
Shoppers seeking a clearly specified remote-control or app-control system.

Nielfoi Blue LED Icicle Lights, 33 ft, 400 LEDs · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 1,403 ratings

5 stars75%75%
4 stars10%10%
3 stars6%6%
2 stars3%3%
1 star6%6%

Customer feedback highlights appearance, ease of use, brightness, and the blue color as positives. Reports about reliability and durability are mixed, with some customers saying the lights worked well and others describing partial failure or a short lifespan. Value opinions also differ. For a corded 400-LED display with multiple modes, those mixed durability reports are worth weighing if the lights need to remain dependable throughout a long decorating season.

Positive themes

Customers praise the appearance and brightness.
Customers mention ease of use and positive impressions of the blue color.

Mixed feedback

Reliability and durability feedback is mixed, including reports of both continued operation and partial failure or short life.
Opinions about value for money vary.