Lithium-polymer, Earbuds: Up to 9 hours, Total with charging case: Up to 42 hours
Features
Adjustable Stay Aware mode, Tile finding Technology, Bluetooth Multipoint pairing, Bluetooth automatic device switching, Water Resistant Yes, Foldable No, Volume Control No, Calling Functions Yes, Microphone Yes, Noise Cancellation No, Noise Isolation Yes
In The Box
Rail True Wireless Earbuds, Charging Case, Ear Gels (S, M, L), USB-C Charging Cable, Quick Start Guide, User Guide