Reduced-size keyboard and 85 keys made of black silicone, flexible, roll-up and waterproof. Keyboard wireless Bluetooth-based. Completely sealed, no screws, giving it greater resistance to external attacks, including some acids. Level of water resistance of type IP67. Has 85 membrane keys that get the maximum comfort in every key touch. Life Cycle 10 mimillion keystrokes. Displayed size of 176 x 72 x 8.5 mm. It is supplied retractable USB cable 80 cm male USB A male to mini USB for charging the internal rechargeable battery. Ideal for use in smartphones, tablets, Android, Windows Phone, iPhone or portable devices that have Bluetooth wireless connection or where very little space available. Available in different colors for special ordersthem by numbers.