With nine LED lights, 4 message coaster with red, blue, green or yellow light AAA x 3 pieces batteries or AC adapter power sources Programmable messages are available Size: 122 mm x 122mm x35mm, 165 grams (with battery, without adapter) Best promotional item for pubs, important events, etc. Can print customized logo on top side First message can be fixed and not erasable for promotional purpose Instructions - There are three red buttons located on the bottom circle of each coaster (shown below), and a single "On/Off" button beside them on the bottom circle. - To activate the fan, push the single button. - Once the fan is on, you can then program a custom message. - To program a message, push and hold the middle of the three red buttons (B) until you see the cursor appear on the fan blade. - Press the right red button (C) to scroll through the alphabet. - Once you've decided on a letter, press the middle of the three red buttons (B) to go to the next character space. - The left red button (A) allows you to choose symbols such as! , @, #, %, etc. As well as numeric characters 0 - 9. - When you are finished with your message, push and hold the middle of the three red buttons (B) for 2 seconds to finalize. - To program another message, simply push the middle of the three red buttons (do not hold) and the fan will appear blank. - Repeat above steps to program up to 4 custom messages! Packing details: IPC/WHITE BOX 72PCS/CTN CTN MEAS.: 57.50CMX40.00CMX30.00CM N. W.: 11.30KGS G. W: 12.30KGS (without three AAA batteries) N. W.: 12.80GS G. W: 13.80KGS (with three AAA batteries)