CORST BD400LBW 10 m Blue and White Icicle Lights, 400 LEDs

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Product guide

CORST BD400LBW 10 m Blue and White Icicle Lights, 400 LEDs

CORST BD400LBW icicle lights are a 10-metre, corded string with 400 blue and white LEDs for indoor or outdoor decorative displays. The listing describes eight lighting modes, a timer and end-to-end connections for up to three strings, but customer feedback raises concerns about remote reliability and outdoor rust resistance.

At a glance

The 10 m string is specified with 400 LEDs across 80 hanging drops.
Blue and white LEDs and eight listed lighting modes offer different display effects.
A timer is described as running for six hours on and 18 hours off.
The listing says up to three strings can be connected end to end.
Remote control is claimed, though customer feedback reports inconsistent operation.

Price

£20.15Save 19%

Reference price: ~~£24.96~~

Price checked: 14 Nov 2026

View offer Ahead of Black FridayExplore the selection

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Pros and cons

Pros

The 10 m length and 80 drops provide a defined layout for rooflines, windows or fences.
Corded power avoids reliance on batteries for the lights themselves.
Timer and multiple lighting modes are listed for scheduled, varied displays.
The stated end-to-end connection option can extend the display with compatible strings.

Cons

Customer feedback reports that the remote can work intermittently.
Some customers report rust appearing within two weeks and question whether the lights will last outdoors year after year.

Technical specifications

21 specifications

Identity
Brand	CORST
Model	BD400LBW
Colour	Blue+white
Number of lights	400

Connectivity and controls
Wireless connection listed	Bluetooth
Control method listed	Remote
Lighting modes	8 Lighting Modes/Timer Function
Timer setting	6 hours on 18

Power and battery
Power configuration	Corded Electric
Voltage	31 Volts

Dimensions and installation
Length	10 Metres
Form factor	String
Weight listed	0.75 Kilograms
Drop count and pattern	80 PCS drops. Spacing between drops of different lengths is 12.5m. Drop lengths 60- 40- 70- 30cm, number of light bulbs is 6, 4, 7, and 3 respectively.
Maximum connected strings	up to 3PCS fairy icicle string lights

Materials and protection
Water resistance listed	Waterproof
Ingress protection rating	IP44
Material listed	Copper
Indoor or outdoor use	Indoor, Outdoor
Light source	LED
Light colour	Blue, White

What to know before buying

Listing details to confirm

Listing details are inconsistent or unconfirmed: the structured fields list Bluetooth although the controls are described as remote, and the battery fields conflict between one included C battery and a contents list specifying one lithium-ion battery. The claimed 10 m total length sits alongside a 5 m lead-wire detail without clarifying whether the lead is included in that measurement. Confirm the selected listing's control, battery and length details before purchase. The listing also claims waterproofing and IP44, while customer feedback raises rust concerns, so treat long-term outdoor durability as uncertain.

What’s in the box

Included

Remote control
1 × lithium-ion battery

Who is it for?

A good fit for

Buyers wanting a blue-and-white icicle display for a roofline, window, fence or patio.
People who want a mains-powered string with a timer and several lighting modes.
Displays that may benefit from connecting up to three compatible strings.

Less suited to

Buyers who need dependable long-term outdoor durability based on the available evidence.
Anyone who requires a confirmed control connection type or clearly specified remote battery.

CORST BD400LBW 10 m Blue and White Icicle Lights, 400 LEDs · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 1,334 ratings

5 stars72%72%
4 stars15%15%
3 stars5%5%
2 stars2%2%
1 star6%6%

Customer feedback describes the lights as easy to set up, bright and attractive. Opinions are mixed on the remote, functionality, quality and value, with some reporting intermittent remote operation. Rust resistance is a particular concern, with reports of rust within two weeks and doubts about lasting through repeated outdoor seasons. These comments matter for a product listed for outdoor use, but they are customer reports rather than confirmation of how every set will perform.

Positive themes

Customers report easy setup and use, along with pleasing appearance and brightness.

Negative themes

Some customers report rust appearing within two weeks and question long-term outdoor durability.

Mixed feedback

Feedback on the remote and functionality is mixed, including reports of intermittent operation.
Views on quality and value vary.

Frequently asked questions

How long is the CORST BD400LBW string?

The listing gives a length of 10 metres. It also mentions a 5 m lead wire without clarifying whether that is included in the stated total, so check the listing if the exact coverage matters.

Can these lights be connected to other strings?

The listing claims that up to three strings can be connected end to end. It does not establish compatibility with other brands or models.

What timer and lighting modes are listed?

The listing describes eight lighting modes and a timer set to six hours on and 18 hours off.

Are the lights suitable for outdoor use?

They are listed for indoor and outdoor use, with an IP44 rating and a waterproof claim. Customer feedback also raises concerns about rust and long-term outdoor durability.