<p>what is better? the wireless one, or the one that has a watch and chest-strap</p>
<p>also, does the chest-trap one get messed up if you wear a shirt over it- are u required to go shirtless…</p>
<p>huh??? why???</p>
<p>well i want to buy one, and know how each functions, since- i run all around town,</p>
<p>Get the shirtless version. Going shirtless is fun.</p>
<p>The chest strap version works perfectly well with a shirt on…</p>