Annoy-a-tron tricky sound now available in upgraded version of 2.0 with new iteration. Its offered almost a half of dozen sound option to choose (beep, 12 kHz electronic noise sound, 15kHz, cricket, doorbell, alternating between all sounds) as well as volume control knob and two magnets that can use to hide it in our office room/class.

Annoy-a-tron version 2.0 is featured by 15kHz of Mosquito tone of young folks (Teen Buzz), Grating Electronic noise in a full volume, Cricket chirping at medium/low volume, IM Doorbell of low volume and Typical Electronic Beep also in medium volume. Annoy-a-tron tricky sound 2.0 version size is about 2.5 x 1.5 x .35 inch and sold with priced at $12.99 plus with a solitary CR2450 battery.