... the important and valuable things,for example baby, mobile, pets, bags or other important things you want.2 ... Convenient to use, easy operation, small size and portable.4. Microcomputer control technique adopted. It consists of ... alarm with vibrating convenient use, easy operation, small size, and portable.PACKAGE:Transmitter: 44 (H) ×28 (W) ×8 ( ... NO. 7 ×1(1.5V, AAA size) Mini Anti lost alarm for kids