Model : Evolve Model no: PWH01 Bluetooth version 5.0 Talk time upto 10 hours Play time upto 8 hours Charging time upto 3 hours Working range upto 10m sensitivity 80dB Frequency 20Hz-22kHz HD sound quality, Comfortable ear muffs, Long play time, microSD card slot, in bulit micro phone , bluetooth 5.0 & Aux support. Colours available: Black, Blue