Brightown BMSL42 Smart C9 Christmas Lights, 100 ft, 100 LEDs

LEDs: Brightown BMSL42 Smart C9 Christmas Lights are a 100-foot outdoor LED string with app control and RGB color options. The listing describes Bluetooth pairing, customizable effects and timers, but its color claims are inconsistent, so confirm the modes you expect before buying.

At a glance

App control is described through the Aurelux Bluetooth app, with preset scenes and individual bulb color adjustment.
The listing claims a built-in microphone for music-reactive effects and group sync for up to 8 sets.
App timers and remote 4/6/8-hour timer settings are described.

Price

$119.99Save 14%

Reference price: ~~$139.99~~

Price checked: Nov 13, 2026

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Often bought together

Permanent Outdoor Lights Pro, 200ft with 120 RGBCW+IC LED Christmas Lights | 120 Led, RGBCW+IC, IP68, 16M Colors, 100+ Scenes, DIY Effects, App/In-app Voice/Remote Control, Music Sync, Smart Scheduling

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Pros and cons

Pros

A 100-foot string with 100 LEDs offers a long run for outdoor decorating.
The claimed app controls, preset scenes, music effects and timer options provide several ways to customize lighting.

Technical specifications

12 specifications

Identity
Brand	Brightown
Model	BMSL42

Light string
Length	100 feet
Light count	100
Light source	LED
Listed color	RGB (Red, Green, Blue)
Style	Retro
Layout	Linear
Intended use	Outdoor

Connectivity and controls
Wireless connection listed	Bluetooth

Materials and protection
Water resistance listed	Waterproof
Ingress protection rating	IP67

What to know before buying

Listing details to confirm

The listing is inconsistent about color capability: the details identify RGB, while feature text also claims RGBW, warm-white and pure-white modes. It also alternates between 100 feet of string plus a 16.4-foot power cord and a 115-foot total length. Confirm the color modes and measured overall length for the selected listing.

Who is it for?

A good fit for

Buyers decorating outdoor eaves, trees or patios who want a long C9-style LED string and app-based effects.
Shoppers who want music-reactive lighting, timers or the option to sync multiple sets.

Less suited to

Buyers who require confirmed white-light modes or an exact total installed length without checking the listing details first.

Brightown BMSL42 Smart C9 Christmas Lights, 100 ft, 100 LEDs · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.8 / 5 · 25 ratings

5 stars93%93%
4 stars0%0%
3 stars7%7%
2 stars0%0%
1 star0%0%

The supplied evidence contains aggregate ratings but no written customer feedback. Ratings are mostly in the five-star category, with some three-star ratings, but this small aggregate sample cannot explain what buyers liked or disliked or establish performance. Consider the stated string length and unresolved color-mode details against your installation needs.

Frequently asked questions

How long is the light string?

The listed string length is 100 feet. Feature text separately claims a 16.4-foot power cord and 115 feet total, so confirm the cord and total-length details before planning installation.

What colors can these lights display?

The details list RGB, while feature text also claims RGBW and warm-white and pure-white modes. The listing is inconsistent, so verify the available modes if white light is important.

How are the lights controlled?

The listing describes control through the Aurelux app over Bluetooth, plus a remote with 4/6/8-hour timer settings. It also claims Alexa and Google Assistant control through the app.

Are these lights intended for outdoor use?

The listing specifies outdoor use and identifies the protection rating as IP67. These are manufacturer claims, not independent verification.