SPECIFICATIONSSize: diameter 34.5 mm, length 100.5 mmWeight: 78 gBatteries: 1 Lithium Polymer (included)Color: TanFEATURESNote that for proper installation, the barrel cannot exceed 12 mm from the foremost end of the thread. Otherwise, the barrel will block the infrared sensor of Lighter BT and BB tracers will not be induced.Connects the smartphone via Bluetooth, adding the function of speedometer through the AceSoft APPSupports red and green tracer BBsBuilt-in Li-Poly battery with a charge time of 2 hoursA full charged can provide the shooting of 30000 tracersFCC, CE, ROHS compliantFree App provided both IOS and AndroidLED power and electricity quantity displayProduct Barcode: 193939001528