You can program the device via Bluetooth using a mobile phone at any time and from any location. Featuring a stylish and eye-catching design, it is suitable for trade shows, parties, conferences, concerts, exhibitions, restaurants, waitstaff, guides, model cars, model buses, drivers, promotions, sales personnel, and as an LED sign. Display different messages depending on the time and situation. Supports multiple languages including Chinese, English, Korean, Japanese, Russian, Spanish, and others. Type: Black Frame, Red Font, Four Characters Color: Black Material: ABS Size: 90 x 30 x 6mm Package Contents: 1 x Electronic Badge Note: Light and screen display differences may cause slight variations in the color of the item compared to the picture. Measurement error allowance is +/- 1-3cm.