Rail ANC the new top-shelf noise-cancelling true wireless earbud from Skullcandy. Rail ANC is fully loaded with wireless charging Skullcandy Supreme Sound skull-iQ Smart Feature Technology and best-in-class adjustable 4-mic hybrid ANC. Rail ANC provides 27 hours of listening time with ANC on and 38 hours with it off. Plus Multipoint Pairing lets you connect your earbuds to two devices simultaneously Rail ANC manages your connections automatically. Rail ANC features 12mm drivers that have been selected and expertly tuned in combination with dual Clear Voice Smart Mics which use A.I. to isolate the speaker s voice and reduce background noise