Digital Walkie-Talkie Set Without Keypad And With Display Complete As Per Rdso Specification No. Rdso/Spn/Tc/107/2018 With Latest Amendments. Frequencies: 149.75 Mhz, 160.40Mhz And 161.15 Mhz. Battery: Min. 2300Mah Li-Ion/Ni-Mh. Technical Parameters As Per Para5.0 [B] Of Rdso Specification No. Rdso/Spn/Tc/107/2018.