Batteries keep charge for several hours. Ten (10) batteries in each case. Small battery chargers included or use in conjunction with T-733 multi chargers to recharge. Detachable microphone with clip serves also a speaker.
Channels:
F1 - (158.3400MHz) CCA internal communications which can be unrelated to oil spill containment can occur here. It is a shared channel.
F2 – (158.4450MHz) This frequency is primarily available for oil spill containment and cleanup operations and for training and drills essential in the preparations for the containment and cleanup of oil spills. It can be used also for communication with other organizations for such operations.
F3 – (159.4800MHz) Same as F2
F4 – (159.4875MHz) same as F2
These portable radios are licensed as marine utility stations to allow comms to vessels on US and Int'l Marine channels.