Belkin - SoundForm ANC (Active Noise Cancelling) - Built-in Microphone with Clear Call Quality technology  - Bluetooth Headphones 3.5mm and USB-C cables included to connect to any modern audio source - Sand (Bluetooth 5.4 connects easily to devices within 10 Meters - 60 hours of battery life) - 2-year warranty - PLEASE NOTE: HEADPHONES ONCE USED - ARE NOT RETURNABLE!