Share: Title:Frontier X2 | World’s Most Advanced Wearable Duration: 8:12 Plays: 6.8K views Published: 1 year ago Download MP3 Download MP4 Simillar Videos ▶️ 12:14 World’s Smartest Heart Rate Monitor? - Fourth Frontier X2 6.8K views • 11 months ago ▶️ 6:49 Fourth Frontier Frontier X2 Smart Heart Monitor 6.8K views • 4 months ago ▶️ 4:26 Fourth Frontier Heart Rate Monitor | With Doctor Feedback! 6.8K views • 3 years ago ▶️ 15:41 Fourth Frontier X2 Honest Review: Who Is It For? 6.8K views • 4 months ago ▶️ 5:43 Aw's Review Of Fourth Frontier's X2 Ecg Monitor And Heart Rate Strap 6.8K views • 1 year ago