Low power consumption and strong interference resistance. Bi-directional card reading with intelligent indicator lights to confirm successful data reading. Features an elegant magnetic installation structure for stable card reading, utilizing patented technology. Compact and lightweight design. MSR90 is a USB emulation keyboard interface device that requires no driver or software installation. Compatible with any system accepting keyboard input, including Word, Excel, and other keyboard-based applications. Hand-swipe operated magnetic card reader with USB interface, equipped with a high-integration magnetic card decoding chip. Color: Black. Material: Metal. Package Contents: 1 x Reader (other items not included). Note: Lighting and display differences may cause slight variations in color representation. Measurement error allowance: +/- 1-3 cm.