Wireless Whiteboard: Electronic Mentalism Device

A perfectly innocent looking whiteboard. There is absolutely no visual clue that it communicates with a miniature receiver that sends you an indication the moment that a written item is erased. The volunteer writes up to 5 names, or countries, favorite restaurant, dishes etc. on the board. You can stand up to 50 meters away and even be blindfolded – yet you miraculously “know” each item as it's erased. The board has 2 sides, so you can work simultaneously on both sides, handling 10 different items at the same time, or even create correlations between the items written on both sides. Suitable for both close-up performances and stage shows. You can involve 5 volunteers simultaneously and “read their minds”. Technical details: Size: 30X40 cm Frequency: 315mhz  Sensor type: magnetic Receiver Battery: Lipo battery -rechargeable 3.7 volt Whiteboard battery: 23A – sufficient for about 500 shows Polyester Case size: 50X40cm   Technical details of the RF Receiver: Au