INCLUDES ADJUSTABLE METAL TRIPOD- NEW ST08-1 IS A NEW IMPROVED VERSION FROM BEFORE. THIS MODEL PERFORMS VERY WELL WITHOUT ISSUES. Improved battery compartment for 4 batteries (included) which in turn improves the LED display brightness. The hole for shooting BBs has been increased in size for less missed shots, and new circuitry gives more precise, consistent readings. We tested it measures all color bbs, and even the Rounds per second function worked very good. Much needed and priced right BB chronograph made by Fidragon. Fidragon is a premier airsoft manufacturer and this is a greatly needed item. For testing of .20, and .25 gram BBs only. You can shoot .12 gram through but accuracy has not been tested. This chronograph can measure BB speed in Feet per second, Meter per second, and important in some countries Joules (energy produced when hit an object). You can test .20 gram, and .25 gram BBs. And one more additional feature you can test rounds per second ( how many rounds fired per second). These are all important features for airsoft players in limitation tournaments.