1.PRO-GRADE PRECISION & CERTIFIED ACCURACY Engineered with 1% precision to meet ISO , ASME B, and GB/T standards, this torque wrench digital 1/2 drive includes a factory calibration certificate for professional-grade reliability in critical applications. 2.SMART MULTI-UNIT DISPLAY & REAL-TIME TRACKING The digital torque wrench lets you switch effortlessly between 5 units (lb.ft, lb.in, N.m, kg.cm, kg.m) on its backlit LCD screen. Real-time tracking mode eliminates guesswork during tightening, ensuring precise torque control. 3.AUDIBLE & VISUAL FEEDBACK SYSTEM This advanced torque wrench features progressive buzzer alerts that increase in intensity as target torque nears, followed by continuous beeping and sequential LED lights upon achievement providing clear confirmation without visual distraction. 4.HEAVY-DUTY CONSTRUCTION & ERGONOMIC DESIGN Built for durability, this digital torque wrench offers a 3.8-250.8 lb.ft (5.1-340N.m) torque range, impact-resistant housing, and ergonomic grip. Ideal for workshops, industrial settings, or heavy-duty projects.