KX-327NHT 32.768 KHZ KX-327RT KX-327RT 32 KX-327RT 32.768 kHz KX-327RT 32.768KHZ KX-327S KX-327S 32.768 KHZ 10 PPM KX-327S 32.768 KHZ 20 PPM KX-327ST 32.768 KHZ 10 PPM KX-327ST 32.768 KHZ 20 PPM