Dynavox Premium speaker cable 4 x 2.5mm2 for highest resolution. Inner conductor OFC (99.99% copper), twin construction per 2 wires per pole +/-. Conductor construction 50 x 0.25 mm each, cable diameter approx. 12 mm, wire cross section 2.5mm2, nylon outer braid black / red for protection against mechanical loads. Low-loss PE insulation with additional PE support element. High quality banana plugs for a firm hold and best transmission. Length 2 x 2 m.