The Aviva Challenge in association with BATAK tests reaction times, hand eye co-ordination and stamina. BATAK equipment consists of 10 bright green LED cluster targets which are arranged in a 'maximum stretch' configuration for the player. The computer controlled targets are randomly lit, while hits and misses timed and scored. Hit as many targets within 30 seconds by pressing the corresponding number on your phone keypad. When one light is hit another will appear...So you have to be quick!