Ngaahi fotunga:
1.Faingofua hono folá mo e fakatahaʻangá;
2.Tukupa maʻolunga,ongoʻingofua lahi mo e fakaʻilonga maʻolunga ki he fika ʻo e longoaʻa;
3.Maama maʻulalo ʻaupito,tuʻunga lelei ʻo e ʻīmisí;
4.Ngaahi pinati fakaʻilekitulonika ʻa e DSP,mahino ʻo e ʻīmisí ʻoku ʻikai hano fakakehe;
5.Shockproof,vaí,fakafepaki ki he kaunoa mo e fakafepaki ki he mafana/maʻulalo.
Toe vakai'i
'I ai ka 'oku 'ikai ha toe vakai'i.