Other1.Insert tow pieces of 1.5V AAA size batteries in the battery compartment The LCD display will show the time. 2. Press Power switch button once enter transmit mode LCD will show the current transmit frequency, press Channel UP/down button to increase or decrease adjust frequency. Press Power switch 3. When you want store frequency, press? Sp: button the memory number will show on display. 4. When the units show the time, press and hold SET button for about3 seconds enter setting mode, last number of minute will flash press? Hub sp; or? Tub sp; button to set your desired digit, press SET button to confirm and will show the time after not pressing button for3 seconds. 5. When in transmit state, press POWER SWITCH button will show the time. 6. Low battery detects function. 7. Temperature display. 8. Car charge.