L'Antre Du Dingo reviews the shooter Flare Cube Mono tracer, a rectangular airsoft tracer unit with a unique design. Made from CNC-machined aluminum, it offers a "no-frills" experience, forgoing Bluetooth apps in favor of straightforward functionality. The unit features four front LEDs for a flame effect and internal UV LEDs for illuminating BBs, with three different modes to choose from. He highlights its unique rectangular shape as a benefit for not obstructing sights and notes that while the constantly blinking blue LED is a minor con, it's easily remedied. According to him, the tracer is also durable, with an IP64 rating, and can handle firing rates up to 50 BBs per second.