Uptotop ZF-100-2/SB Warm White String Lights, 2-Pack

Uptotop ZF-100-2/SB string lights are a two-pack of warm-white plug-in LED strands for indoor or outdoor decorating. The listing describes each strand as 20 feet with 100 bulbs, while another specification gives an 18.5-foot light length plus a 1.5-foot lead wire. They suit smaller accent displays, but the conflicting total-length and protection ratings merit attention before outdoor use.

At a glance

Two strands are listed, with 100 bulbs per strand and warm-white illumination.
Plug-in corded power suits locations with access to an outlet.
The listing claims indoor and outdoor use and says up to six sets can be connected.
The described lead wire is 1.5 feet, a practical placement detail when planning an outlet route.

Price

$17.09Save 32%

Reference price: ~~$24.99~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

Two separately listed strands provide flexibility for decorating separate areas or arranging a longer display.
Warm-white LEDs and a stated 2700 Kelvin color temperature support a warm decorative look.
Connectability is claimed for up to six sets, which may help extend a display using compatible strands.

Cons

Corded power requires a suitable outlet and limits placement compared with battery-powered lights.

Technical specifications

26 specifications

Identity
Brand	Uptotop
Model	ZF-100-2/SB

Lighting
Light source	LED
Light color	Warm White
Color temperature	2700 Kelvin
Bulb count listed	100
Bulb size	0.4 x 2.4 inch
Bulb spacing	2.25 INCH

Length and configuration
Length listed in product details	20 feet
Light length	18.5 FT
Lead wire	1.5 FT
Total length	20 FT
Number of packs	2

Power and controls
Power source	Corded Electric
Work voltage	120 V
Wattage	61.2 watts
Control method	Touch
Connection type listed	Wired

Protection and use
Water resistance listed	Waterproof
Ingress protection rating listed	IPX4
Protection rating in product description	IP 44 Waterproof
Indoor/outdoor use	Indoor, Outdoor
Material	Plastic
UL certification claim	UL Certified
Maximum connectable sets claimed	up to 6 sets

Dimensions
Dimensions listed	5.71 x 3.35 x 6.1 inches

What to know before buying

Listing details to confirm

Listing details conflict or remain inconsistent: the title says 40 FT total for the two-pack, while each strand is also described as 20 feet and as 18.5 FT of lights plus a 1.5 FT lead. Protection is variously listed as Waterproof, IPX4, and IP 44 Waterproof. Customer feedback also questions whether the lights are LED, despite the product details specifying LED. Confirm the selected listing's strand length and protection information before planning a display, especially outdoors.

Who is it for?

A good fit for

Decorating small trees, bushes, porches, patios, balconies, windows, or indoor party spaces.
Buyers who want two plug-in warm-white strands for seasonal or event accents.
Setups where a nearby outlet and the stated short lead wire are workable.

Less suited to

Locations without convenient access to an outlet.
Buyers who need a verified exact usable length or a clearly established outdoor protection rating.

Uptotop ZF-100-2/SB Warm White String Lights, 2-Pack · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 1,847 ratings

5 stars76%76%
4 stars11%11%
3 stars5%5%
2 stars1%1%
1 star7%7%

Customer feedback describes the lights as festive and attractive, but reports mixed experiences with brightness and operation, including comments about dim lighting or only part of a strand working. Some feedback also disputes the LED description. These concerns matter for buyers relying on consistent illumination, so the listed LED and bulb specifications should be weighed alongside the reported uncertainty. The overall rating distribution is mostly favorable but includes a notable one-star share, and ratings alone do not establish why customers chose their scores.

Positive themes

Feedback describes the appearance as beautiful and festive.

Negative themes

Some feedback questions whether the lights are LED as listed.

Mixed feedback

Brightness and functionality receive mixed comments, including reports of dim output or only part of a strand working.
Feedback about quality is mixed.

Frequently asked questions

How many lights and strands are listed?

The listing describes a two-pack with 100 bulbs per strand, or 200 bulbs across the pack.

How long are the strands?

The title states 40 FT total for the two-pack. Other details say 20 feet per strand, and the product description breaks that into 18.5 FT of light length plus a 1.5 FT lead. Confirm the length for the selected listing.

Can these lights be used outdoors?

Indoor and outdoor use is claimed, but the stated protection details vary between Waterproof, IPX4, and IP 44 Waterproof. Verify the applicable rating for your use.

Can multiple sets be connected?

The listing claims that up to six sets can be connected. It does not provide further conditions for that claim.