Snom M70 VoIP SIP DECT ruggedized handset, 1 x programmable alarm key, 2 inch colour backlit TFT LCD, 3.5mm headset jack, HD audio, Bluetooth, MIL-STD-810g 516.6 tested, lithium-ion battery, for use with M300 (standalone), M700 (multicell) and M900 (multicell) base stations.