对子哈特工口姐姐 generation 1: gentle curves, less detail than generation 2

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Weight is 647g, overall length 14.5cm and internal length 12cm. The material feels slightly firmer than -1 but close to it on the review's own scale, with little odour and more oil release than some related models. The rating is not standardized. A different moulding process is only a source hypothesis. Colour is darker red than generations 2 and 3. Exterior detail is coarser, with an end ring and an unusable decorative rear opening.

The channel mainly uses curved transverse ridges, few beads and gentler curvature than later versions. Its terminal chamber resembles generation 2, but the softer material makes access easier. Friction and envelopment are adequate, with mild, accessible feedback and a slightly clearer chamber feel. Texture precision, refinement and intensity are lower than generation 2. The review nevertheless prefers it to generation 3's more unusual design. The final recommendation is 3 stars.