The length of the line: Approx 60cm Easy to operate, needless of drivers, you can just plug it into your computer's USB port, and it can work for you. and high quality. Ergonomic design, makes you feel natural and comfortable, long game will not feel tired. Sensitive buttons, long service life, over 5 million clicks, the normal work in harsh environments. Size: Approx: 70x35x20mm Suitable for game enthusiasts, fashionable young, commercial office crowd, long time computer workers. The retractable design provides much more convenience for you compared with the universal wired . 1 x Mini Retractable USB Its tiny, cool and stylish looking can get other's attention easily. Sensitive Buttons, Long Service Life, Over 5 Million Clicks, The Normal Work In Harsh Environments. Suitable For Game Enthusiasts, Fashionable Young, Commercial Office Crowd, Long Time Computer Workers. Size: Approx: 70x35x20mm The Length Of The Line: Approx 60cm The Retractable Design Provides Much More Convenience For You Compared With The Universal Wired .