Sunda International Industrial Co., Ltd. is the professional manufacturer of dual sim card,twin sim cover----double sim card, double sim card holder etc

1) Without STK menu, just press some numbers to realize the function that you want（such as press 001 or 002 to switch the online number)
2) Switch online or Auto-switch online without turning on-off
3) Max 99 minutes available for you to self-set two sims auto-switching time individually 4) No data lose when switching 2 numbers or turning on-off
5) Super slim design with special general dual sim card IC for stable quality
6) Show Actual number on screen, number editable
7) Compatible with all GSM cards
8) Best compatibility in this field to the newer mobiles
9) Language select(Chinese /English/Russian)
10) The record of calling memory function