*It uses two AAA batteries, and due to foreign delivery restrictions, it can not accommodate the batteries How to use this electronic torque adapter Press the "C" button to Power on Long press the "U" key to go into mode selection——(TRACK / PEAK) Press the "U" key to pick the torque unit Press the ↑↓ keys to regulate the target cost (Six diverse goal values M1-M6 can be set) When the afterburner reaches the objective value, it'll have gentle and sound alarm prompts Each electronic Torque Meter includes: 1*Plastic box 1/2→3/8 1/2→1/4 Screwdriver*1