Ultra-soft perforated foam

Flexible and ergonomic earcups 

Bluetooth 5.2 

A wireless range of up to 30m/100ft

Speaker max input power 30 mW

Simultaneous Bluetooth connections - 2

Paired devices - Up to 8 Bluetooth devices

Music time - Up to 18 hours (with ANC off) / up to 15 hours (with ANC on)

Talk-time -  Up to 16 hours (with ANC/busylight off)/Up to 10 hours (with ANC on/busylight on)

Charging time - Up to 120 minutes

Charger - USB-C / corded

Battery type - Rechargeable lithium-ion battery

Reference:  Jabra Evolve2 55