1) LED: 21 x 7 Dot matrix 2) Product dimensions: 137 mm x 47mm x 5mm 3) Color: red, blue, white, green, yellow, pink 4) Power: DC3V (button battery CR-2032); rechargeable batteries and charger (optional) 5) Up to 10 messages 6) Program by computer or manually 7) Weight:200g/set
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