1.Designed with kneading massage; 2.Designed with heating function on the massage balls; 3.There are two massage modes, forward and reverse kneading massage; 4.Designed with rechargeable battery (5V2A), recharging only need 2hours, can be useing more than 2 hours; 5.Designed with timing function ( 10mins.) 6.Very easy to use on any where, like plane, train, car, home or office; 7.Travel Essentials, relax your neck muscles; 8.Designed with two items, one is kneading, another is vibrating function, you can choice both of them or one of them. Gift Box Size: 27*12*25cm Carton Size: 62*52*57cm PCS/CTN: 20pcs N/W-G/W:9kgs-11kgs 1x20`GP:3040pcs; 1x40'GP:6300pcs; 1x40'HQ:7400pcs. Technical Parameter: RATED POWER: 3.7W. RECHARGEABLE BATTERY: 5V/2A Rated Working Time: 10mins.