Features: This tachymeter uses advanced technology and good quality materials, the deviation is less than 0,35%, very precise to use. With mini display that offers fast data preview, easy adjustment of settings and support do measurement of many objects such as BB, steel balls, etc. It supports bluetooth connection, suitable for iOS and Android, you can get all the data you need on your smartphone. Compact size and light weight make it easy to carry and store. The built-in battery provides a long run time and is suitable do outdoor use. It supports many popular languages, you do not have to worry about whether it will not be understandable to you. . CHRONOGRAPH TESTER, BB TESTER, AIRSOFT TESTER Specification: Material: plastic Black color Battery: 400 mAh Bluetooth: 2.0 OS: fits do iOS Android Language: Simplified Chinese, Traditional Chinese, English, German, Italian, Japanese, Russian, Polish Size: approx. 13 * 11 * 6 cm / 5,12 * 4,33 * 2,36 inch Weight: approx. 520g . CHRONOGRAPH TESTER, BB TESTER, AIRSOFT TESTER List of packages: 1 x speed tester 1 x Cable 1 x Tripod 1 x Manual The phone is not included in the price. . CHRONOGRAPH TESTER, BB TESTER, AIRSOFT TESTER Please be aware: . CHRONOGRAPH TESTER, BB TESTER, AIRSOFT TESTER