The lonsdale electronic gym timer is perfect for use in gyms and boxing clubs with its highly visible 3 display 4 level sound volume control and extra loud buzzer thats made to be heard even in busy environments the touch buttons let you set the parameters you want for each session rounds can be continuous or set from 1 up to 9 and can last any number of minutes from 1 to 9 interval times can be chosen from 0 60 seconds and rest time from 10 90 seconds both in 5 second increments this