Calculagraph Countdown Timer Alarmer for DJI Phantom FC40 2 Vision Plus Aircraft

Use this timer for your Phantom, estimate the fly time and set up it, make sure the Phantom come back in time to avoid crash.
Item: Phantom Timer.
Color: White.
Diameter: Approx.6.3cm.
To fixed on the DJI Original Remote Control / TX.
Maximum countdown capacity: 99 minute 59 seconds.
Fit for all DJI Phantom series aircraft.
Features:.
- Clever design with loud alarm "beep" sound lasting for about 30 seconds when timing out..
- Compact, light weight & easy to carry..
- You can take it anywhere for emergency use..
- With an easy-to-read LCD.
- 3 buttons on the timer for your convenient operation:.
(1) M button: sets desired minutes.
(2)S button: sets desired seconds.
(3)Start/ stop button: start/ stop timer.
- When the second is Zero, alarm is activated, press any button for stopping alarm.
- Press M + S button: returns to zero.
- Powered by 1 x AG13 LR44 cell button battery (included).
Package includes:.
1 x DJI Phantom Timer