Ngwaọrụ nleba anya GPS maka ụmụaka

Oti mkpu nchekwa onwe, N'ọnọdụ ihe egwu ma ọ bụ ihe mberede, gbanye mgba ọkụ wee were oti mkpu decibel dị elu, nke a na-ejikarị.
maka ụmụ agbọghọ, ụmụ akwụkwọ, ndị agadi ndị owu na-ama maka enyemaka, ọdịdị ejiji, dị mma iji rụọ ọrụ:
1. Wepụ ntụtụ ahụ, ọ ga-ama jijiji na ọkụ ọkụ
2. Pịa bọtịnụ sos, ọ ga-ama jijiji na ọkụ
3. Rechargeable okirikiri ojiji.
4. ọkụ ọkụ ga-enwu maka enyemaka oku