- Precision double-headed chest-piece made of stainless steel.
- Special membranes, Ø 36 mm, with particularly flat and soft non-chill rims for improved adaptation on the skin.
- Bell, Ø 28 mm.
- Overall length: 76,5 cm.
- duplex® de luxe baby is supplied with two pairs of replacement ear-tips, a replacement membrane each and a name plate.

100 Hz – 1,500 Hz max. 14.3 dB at 300 Hz