NWT MobiFren Flex-L Soul Wireless Bluetooth Headset Shape-Memory Alloy LDAC Earphone High sound quality on-the-go Mobifren's MSTS Technology, Qualcomm apt-X, and AAC Codec bring you High-resolution sound. OFC Copper High-quality Oxygen-free copper gives Flex-L series a smoother sound signature compared to other low-end headphones. Two different styles for two different experiences Flex-L series comes in two different styles: air & soul. Flex-L air provides the user with open-back headphone experience while the Flex-L soul offers closed-back listening experience. Noise Cancellation Qualcomm's cVc noise cancellation technology lets you talk in peace during your phone call 7 Music Modes Seven different music modes let you listen to your music to your style Modes: Mobifren Tender User Reference Space Enhance Cinema Up to 7 hours of play time Never be stuck with dead Bluetooth headphones. Flex-L's dual battery design lets it play music up to 7 hours on 1.5 hours of charging! Multi-point Bluetooth Connection Connect up to two devices on one Flex-L Headphone to multi-task efficiently Mobi Share Easily listen to the same song with your friend or loved-ones. Mobi Share feature lets you and your friend listen to the same music, from same devices, at the same time! Voice Recognition Call your supported virtual assistant without reaching for your phone Mobifren App Download Mobifren SM app from Google Play Store or Apple App Store to unlock additional features!