"Synthetic polymer films are most widely used as materials for the production of stable charged films. This book presents a review of three aspects of synthetic polymer films changes initiated by coro...
"Upgrade your luggage with this luxury collection of lightweight suitcases. Available as a 3-piece or to buy individually, this set will get you off on your travels with no problems. The large and med...
Advantagescomfortable, motivates, great tracker, health benefits, easy to use, good battery life
Disadvantagescan't be used swimming, quite expensive
AdvantagesClear screen; some good features
DisadvantagesNot waterproof; horrendous battery life
Advantageswell made, addictive to make you collect and use your data
Disadvantagesshort battery life compared to other models, skin irritation from wearing it occasionally.