All-around Warming Up Quickly: The hand warmers heat up double sides quickly and keep your hands and fingers warm; The heating temperature can reach 122-131°F in seconds after the portable hand warmer is powered on
Long-lasting Rechargeable Hand Warmer: The electric hand warmer keeps warm for 3-4 hours and fully charged in 2.5-3 hours; One charge lasts a pretty reasonable time;
Makes and EXCELLENT gift!