1. Lub teeb tsim thiab yooj yim nqa tawm sab nraud.
2. Txhawb ntau qhov chaw nres nkoj them tib lub sijhawm.
3. Lub teeb LED qhia tau hais tias lub roj teeb raws li txoj cai pom meej
4. Yooj yim los tuav hauv tes, tsis txhob plam thiab khawb resistant
5. Txhawb kev them nyiaj ntawm bluetooth headsets, xov tooj ntawm tes, ntsiav tshuaj thiab lwm yam 3C cov khoom siv hluav taws xob digital