Assertion: life jacket | /r/HasAspect | a battery life of 16 hours
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Source sentences:
text: The Life Jacket 2 has a battery life of 16 hours, more than enough for a canoe trip, a day out by the pool, a day at the beach, a weekend of camping, a few days worth of meal making (I play music while I cook) or a full day outside on the job site.