The KPop Demon Hunters Rumi Sain-Geom Premium Electronic Sword is available for preorder through official retailers, offering fans a 1:1 scale replica complete with 50-plus motion and audio-reactive LED lights, according to product listings from Billboard and Nerdzoic. Priced at $224.99 and slated for release on July 1, 2027, the interactive roleplay item mimics the lead singer’s weapon from the animated franchise.
Interactive Features and Design Specs
Built for both display and interactive play, the roughly 40-inch prop features a movie-based sculpt with metallic finishes and an etched demon pattern along the plastic blade, per details from Billboard and Nerdzoic. The replica includes a built-in rechargeable battery that powers motion-activated lighting and sound effects pulled straight from the film. When users swing the weapon or listen to official soundtrack tracks, the sword unlocks unique light patterns. Audio-reactive technology also allows the 50-plus LEDs to pulse in color to the beat of nearby music or even the owner’s singing.
For storage, the item ships with a clear, purple-tinted plastic display stand featuring the HUNTR/X logo. A USB-C port supports a lit-up shelf display option when the user is not wielding the prop for high-end cosplay.
Pro Tip: According to Nerdzoic, the sword utilizes audio-reactive light technology that syncs with official tracks, making it ideal for both dynamic shelf displays and accurate costume builds.
Franchise Merchandise Expansion
The announcement of the Sain-Geom replica follows the broader global success of KPop Demon Hunters since its release in June 2025, as reported by Billboard. The franchise has driven widespread consumer product lines, including Squishmallows, Mattel dolls, Vans shoes, and themed backpacks. For fans seeking alternatives while waiting for the 2027 sword delivery, Amazon listings highlight ongoing demand for foam KPop Demon Hunters Nerf swords, which have faced low stock levels.
Did You Know? Rumi’s primary weapon in the film is known as the Four Tiger Sword, or sain-geom, characterized by its Art Deco look and glowing runes, which inspired the replica’s illuminated blade and constellation-like detailing.
Frequently Asked Questions
When will the KPop Demon Hunters Rumi sword be released?
According to Billboard, the release date is set for July 1, 2027, and preorders are currently open.
What is included with the premium electronic sword?
The package includes the 40-inch full-size replica sword, a rechargeable battery, a USB-C charging port, and a clear purple-tinted display stand featuring the HUNTR/X logo, per Billboard and Nerdzoic details.
How do the lights and sound effects work?
The sword features over 50 motion and audio-reactive LEDs that respond to movement, swing motions, and external music or singing, pulsing to the rhythm of official movie tracks.
What are your thoughts on the new Rumi Sain-Geom replica? Share your plans for your collection or cosplay in the comments below, and explore our site for more entertainment merchandise updates.