Muzzle speed measurement range: 30.00 ~ 400.0 (m/s)Burst speed measurement range: 100 ~ 5000 (rounds/minute)Speed measuring tube diameter: 36mmCamera tripod screw hole for fixing to camera tripod18650 lithium battery*1Supporting micro USB external power input for chargingSize: 130 (L) x 108 (W) x 61 (H) mmWeight: 312g (without battery) Note 1: When using an external power supply, use a 5V adapter with a current of 0.5A or more. Note 2: Avoid using the BB bomb to accidentally hit the panel and buttons during use to avoid OLED or button damage. Note 3:For Gas/CO2 blow back guns & Gel blaster, there will be water vapor and mist eruption when fired, and willinterfering with IR detection readings. It is recommended to keep a certain distance from the chronograph when using Gas/CO2 blow back guns &Gel blaster to avoid disturbed readings. 128*128 OLCD is clear and readable. The contrast of OLCD display can be adjusted according to personal preference. 4-way push button can help users to operate easily. Acetech AC6100 supports Micro-USB (5V/0.5A) power input (no battery charge function). Tripod mount can be installed with UNC 1/4" - 20 screw. Caution! Please use 18650 lithium battery MENU Panel has 4-way rubber texture push button. 128*128 OLED screen bring users a new experience of using airsoft chronograph. Screen 1 mainly shows the round of fire and velocity. It also present more detail data including Energy (Joule) and Energy per unit area (J/cm²). Besides, hotkey of ammo parameter is provided that user can change the ammo setting conveniently. Screen 2 displays 25 memory slots recording each rate of fire and velocity (No missing fire data). Users can check the record of velocity and ROF anytime. Different from Acetech AC5000, AC6000 shows the max, min and average value. In the setting screen, users can set the BBs information (weight and caliber) and unit. Machine setting also can be found here. 1. Go to the APP store and search for AceSoft and install it. 2. Start APP, AC6000BT and mobile phone Bluetooth. 3. Please refer to the figure below for the first time use. Click on the AC6000BT icon and a reminder icon will appear during pairing. At this time, press the AC6000BT power button to complete the pairing. When measuring ROF speed, you must fire more than 10 rounds to measure the ROF value. a) Ammunition can be set. b) Updating the device (you can upgrade here if new firmware is released). c) Restore to the default. d) The current version of the device e) The current serial number of the device f) Device; tap to jump to the homepage. g) Records; read the pre-stored shooting data h) Store; tap to enter the ACETECH homepage. Acetech AC6000 Acetech AC5000 USD 80 55 Measure Muzzle Velocity 30/ms ~ 400/ms 30/ms ~ 400/ms Panel Cover 2.7mm Thick PC Plastic 1mm Thick PC Plastic Screen 128*128 OLED 128*64 LCD Keypad Rubber Texture Plastic Keypad Tube Diameter 36mm 24mm Detecting Sensor 12 IR Sensors 7 IR Sensors LED Lens ✓ X IR Sensor Self Calibration ✓ ✓ Battery AAA Alkaline Battery*4 AA Alkaline Battery*2