The GT-SET-TWO is fully equipped flight case / charger complete with 19 x 863 – 865MHz GT-300R belt pack receivers and 1 x 863 – 865MHz GT-300T belt pack transmitter. The specially designed strong and rugged case has 20 compartments which the receivers and transmitter slot into. Charging of the batteries will automatically take place and depending on the battery charge state will take up to 16 hours for a full charge. 2 red / green coloured indicators are used for each compartment giving visual indication of On and charge cycles. Suitable for use with NiMh batteries, Switched mode power supply allowing mains power operation anywhere in the world 110 – 230VAC .