Listen to your favorite music for 100 hours on a single charge Google Fast Pair 2.0 allows you to quickly and easily pair the Enduro 100 to Android devices 40mm Ironless Drivers produces bold and articulate sound with low distortion Lightweight extended wear design, allowing for countless hours of listening enjoyment Bluetooth 5.0 with AAC and Apt X HD playback and NFC Hi-Res audio performance with included 3.5mm cable Fast Charge enables 13-hour of playback with only a 10-minute charge, total charge time 3hrs