KS-1B,12KS-1B Explosion-proof Batteryless Telephone,JIAXING KEXUN ELECTRON-Single Way Direct Calling, 12 Lines Mutual Selective Calling
KS-1B Explosion Proof Batteryless Telephone Origin…
KS-1J,12KS-1J Marine Noise Proof Batteryless Telephone.-Single Way Direct Calling, 12 Lines Mutual Selective Calling
KS-1J Noise Proof Batteryless Telephone Original P…
KS-1Q,12KS-1Q Batteryless Telephone, KEXUN-Single Way Direct Calling, 12 Lines Mutual Selective Calling
KS-1Q Batteryless Telephone Original Picture Produ…