Tingling Electronic Spidey Sense Motion Detector T-Shirt

Never be surprised by danger again!
Gives you Spidey Sense to know when someone is behind you
Clip-on proximity sensor with vibration motor
Black t-shirt with artwork of Spidey himself on the front
Officially licensed Marvel collectible
To turn on: Press and hold for 4 seconds. A quick buzz lets you know it's ready.
Your new Spidey senses:
Someone 5 ft behind you: very slow pulse
Someone 4 ft behind you: slow pulse
Someone 3 ft behind you: pulse
Someone 2 ft behind you: fast pulse
Someone 1 ft behind you: very fast pulse
Batteries: 2 AAA (not included)
Care: Remove clip-on device. Wash t-shirt as usual.