Viltrox Weeylite K21 Compact Handheld RGB 8W LED Light Stick

Portable RGB LED Fill Light with App Control, Bi-Color Adjustment & Magnet Base

The Viltrox Weeylite K21 RGB LED Fill Light is a versatile handheld light stick designed to bring professional-quality illumination anywhere you need it. Compact, lightweight, and packed with 160 high-quality RGB and white LEDs, the K21 delivers soft, uniform light with excellent colour rendering (RA 95 / TLCI 97), perfect for photography, videography, live streaming, makeup tutorials, or scenic lighting.

Its polygonal design and built-in magnets make it easy to attach to metal surfaces or fix with a tripod or light stand via 1/4"-20 screw ports on both ends. Hide the light sources in corners to create dynamic effects or provide close-range illumination wherever you need it.

DIY Free Colour Mixing:

Take full creative control with RGBW DIY mode. Adjust the colour of five groups of lamp beads (red, green, blue, cool white, warm white) in 100 levels, and mix and match freely for custom lighting effects.

CCT Bi-Color Adjustment:

Stepless adjustment from 2500K to 8500K lets you switch effortlessly between warm and cool tones, creating the perfect atmosphere for your shots.

Wireless Mobile App Control:

Adjust brightness, colour, and effects remotely via Android or iOS Bluetooth app. With a 15-20 m control range, you can fine-tune lighting without touching the device.

Built-in Lithium Battery:

The integrated 2500 mAh, 3.7 V battery provides up to 1 hour at full power and up to 6 hours on lower brightness settings. Recharge conveniently through the Type-C port in roughly 3 hours.

Magnet & Polygon Design:

Magnets at both ends allow quick attachment to metal surfaces for hands-free lighting. Combined with the polygonal design, the K21 can be positioned creatively anywhere for dynamic fill light.

Key Features:

8W handheld RGB LED fill light, portable and lightweight

160 high-quality LEDs (RGB + bi-colour) for accurate colour rendering

2500K-8500K stepless bi-colour adjustment

0-100% dimmable brightness

DIY RGBW colour mode for custom mixing

Wireless app control (Android/iOS), 15-20 m range

Polygonal design with built-in magnets for versatile mounting

1/4"-20 screw ports for tripod or light stand attachment

Built-in 2500 mAh battery, 1h full power, up to 6h runtime

Type-C charging ( 3h recharge)

Specifications:

Max Luminous Flux: 670 lm (5500K / 100%)

Max Illuminance: 760 lx @ 0.5 m (5500K)

LED Beads: 160 pcs

CRI: RA 95 / TLCI 97

Colour Temperature: 2500K-8500K adjustable

Brightness: 0-100% adjustable

Power Interface: Type-C

Remote Dimming: Android / iOS App

Remote Control Distance: 15-20 m

Battery: 3.7V, 2500 mAh Li-ion

Runtime: 1h full power / up to 6h

Charging Time: 3h

Operating Temperature: 0-40 C

Dimensions: 297 × 39 × 40 mm

Weight: 270 g

What's in the box
1x Viltrox Weeylite K21 RGB 8W Handheld LED Fill Light
1x Type-C Charging Cable
1x User Manual