TiketKAI Mobile is an online reservation of Indonesian Railway for Executive, Business and Economy with complete payment method where you can choose seat as you want.
You also can buy online reservation for Railink (airport train) from Kuala Namu to Medan or Medan to Kuala Namu by your device.
TiketKAI.com give you CASHBACK for every tickets or reservations you bought and can be used as voucher discount or can be exchanged as mobile phone prepaid voucher.