Floating Arc, Sonichive 45hrs Play Time FTW-T271.

Floating Arc Design – Secure, lightweight fit that stays comfortable all day Clear & Balanced Sound – Quality audio for music, calls, and videos Up to 45 Hours Playtime – Extended battery with charging case Fast Charging – Quick power for on-the-go use Stable Bluetooth Connection – Smooth and reliable pairing HD Call Quality – Clear voice pickup for calls Sweat & Splash Resistant – Suitable for workouts and outdoor use Low Latency Mode – Better sync for gaming and streaming