• Aluminium chest-pieces of duplex®, duplex® baby and duplex® neonatal and connector for rapid exchange of chest-pieces
• Matt chromium-plated binaural with integrated reinforced double-spring
• Sealing of external auditory canal with soft, replaceable ear-tips
• Overall length: 79 cm (31.1 in), 78.5 cm (30.9 in), 78 cm (30.7 in)
• Latex-free

tristar is provided with two pairs of replacement ear-tips, a replacement membrane each and a name plate.