RUYAGE ZL20 4G Wifi Zello SIM Real PTT Phone Walkie Talkie
①No Limit on Call Range
②Multiple call modes
③Long stanby Type C charge
④WiFi connection
⑤PTT Voice preemption
⑥Zello Platform
RUYAGE ZL20 4G Zello Walkie Talkie Micro SIM Card SIM Network Support
2G: GSM 850/900/1800/1900
CDMA: BCO
3G/4G: WCDMA: B1/B5/B8
TD-SCDMA: B34/B39
CDMA2000: BCO
4G LTE: FDD LTE: B1/B3/B5
TDD LTE: B38/B39/B40/B41
