... size: L;0.12m, W:0.1m, H:0.07mSpecifications: battery operatedMaterial: Plastic: ABSPacking: 20pcs/ctn, 321ctns/20`GP, 678CTNS/40 ... gives you excellent sound quality. Convenient to use, powered by battery, gel is not necessary, every mother can easily use ... right of your belly button. Specification:power by DC 9V dry battery (battery included)size:120mm*105mm*65mmnet weight:0.10kgcolor available: blue ...