1. Case material: polycarbonate, silicone (anti-slip ring) 2. Material of ball core: stainless steel 3. Uses: decompression, fitness, entertainment and other ways to play 4. Controlled strength, increased entertainment, with variable speed lights (optional) 5. Take wrist rope protection to prevent the ball core speed from flying out too fast, easy for safety 6. Feel the force of the shaft with the wrist, which can exercise the finger muscles and coordinate yourself 7. Built-in autonomous elastic device, play at any time 8. Weight: 270 grams 9. Size: 70x70x55 mm
1. 外壳材质:聚碳酸酯、硅胶(防滑圈) 2. 球芯材质:不锈钢 3. 用途:减压、健身、娱乐等多种玩法 4. 可控制力度,增加娱乐性,伴随变速灯(可选择) 5. 带腕绳保护,防止球芯转速过快而飞出,便于安全 6. 随手腕转动感受转轴的力道,既可以锻炼屈指肌也可以协调自身 7. 内置自主弹力装置,随时把玩 8. 重量:270克 9. 尺寸:70x70x55毫米
提交