The unit operates from momentary trigger switch once main battery that is fitted inside base has been switched on battery is a new cctv 12v bought in uk, not a blue one, comes with 1000mah charger has a view window to observe the red led on, in base of battery holder.
Lens is a 55 mm auto chinnon f 1.17 m42 manual focus and iris via selector switch, gives very good control of ir brightness by open and closing iris as required by viewing range
Ir is by oslom black in focusable torch with weaver mount to side runs on 1x 18650
osd control is mounted just in front of evf
It is built inside a cordless drill body and as such is not a pocket model, but gives easy one handed use, and without the motor and heavey old batterys is suprisingly light
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Hope this all make sense, am asking £180.00 inc post to uk, recorded insured
any questions please ask, thought I would offer it on forum first but if no takes will put on ebay