Additional technical information: Radio sets with 2.5 mm single socket.; Compatible with (details): PMR radio set Alan/Midland 777, Midland 777TR Tourist radio bag-set, PMR Babysitter REER 5001 Set, Albrecht TT Smart Biker set Integral helmet, Albrecht TT Smart Biker set Jet helmet, Albrecht Bikerset Tectalk Smart Integral, PMR radio Albrecht Tectalk Smart+Set, Albrecht Bikerset Tectalk Smart Jet helmet
