Retevis RT665 Mode D'emploi page 5

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Memu Operation
1. Long press the FUNCTION KEY for two seconds to turn on the
transceiver.
2. Channel+/Channel-: adjust the channels, the screen displays
the current channel.
3. V+/V-: adjust the volume,there are 8 levels.
4. PTT: press this button whenever you wish to talk with the user
of the other radio.
5. Short press the FUNCTION KEY to enter into the clock
adjustment mode,then press the V-/V+ buttons to adjust the
time,press the key to exit.
Standard Accessories
Radio body Type-c USB User's Manual
02