Premium sound quality：Nank 3th ResoVibe™ Technology and OT leakage reduction 3.0 technology, which effectively minimizes the amount of sound that escapes from the headphones.
Lightweight: weighs only 26g, provides a comfort experience.
Bluetooth 5.4+ IPX8+ 8 hours play time + 16 GB MP3 player
https://naenka.com/products/runner-4
