①. You can perform DIY programming using a mobile phone via Bluetooth anytime and anywhere. ②. It can be used in Trade Shows, Parties, Conferences, and Concerts. ③. It can be used as an LED sign in various places such as parties, exhibitions, restaurants, and for roles like waiters, guides, model cars, model buses, drivers, promotion staff, and sales persons. ④. Different messages can be shown at different times and in different situations. ⑤. Supports Chinese, English, Korean, Japanese, Russian, Spanish, and other languages. ⑥. Type: Black Frame Red Font ⑦. Colour: Black ⑧. Material: ABS ⑨. Size: 97 x 28 x 6mm ⑩. Package Contents: 1 x electronic badge ⑪. Only the above package content is included; other products are not included. ⑫. Note: Light shooting and different displays may cause the color of the item in the picture to differ slightly from the real thing. The measurement allowed error is +/- 1-3cm.