PS Serial
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PS Series-Advanced Option
Lub optimized tsav tau txuas ntxiv tsim cov cim ceev
uas tau txhim kho qhov nrawm nrawm ntawm cov cim ya.
Integrated qauv tsim, siab thermal stability, siab plua plav,
qib waterproof.
Aperture loj: 10, 15, 20mm.