Alan MA 31-L, Headset, For security purposes, Ear plugs transparent with coiled cable, Clip on mic, Angled duo jack plug 3.5/ 2.5 mm for LPD and PMR devices, e.g. ALAN G5 Set, Tectalk Pro XL or Alan 777 (in use with #175393#), Extremly light and discreet , especially for security!