This little thing is one of the safest/smartest things you could wear or gift to a loved one! The Bkin is a super bright and highly effective light that shines a 120° viewing angle visible during the day or night over a half a mile away! The Bkin has a built in USB connector to recharge your battery (50 min charge) and can last 20 hrs on one charge! Seriously, if you or a loved one runs/walks/bikes at night, this is a great way to do it safely.