Hello,My name is Slava,I need 5 pieces: GPS Trakker,what price can you give for testing?Here is not a complete description of the product that I value:-Dimensions (L x W x H): 45: 50: 28 mm.-System of satellite-position-GPS + GLONASS-Dual mode (AGPSis supported).-Communication-GSM GPRS, 4 band 1900 MHz.-Eating-8 ~ 16V we chat