... waterproof and wear-resistingetc.2. Safety & reliability: equipped with special power adapter and 3.7 V li-battery, the input voltage ... for optional charging, USB or power adapter at home , li-batterysupply outdoor, easy to operate. Mobile heat products are all equipped with ... and carry. It can use the power adapter without computer, too. It also can use mobile power (li-battery) to supply outdoors, ...