Item Type: Electronic Tension CalibratorWeight: Approx.134g / 4.7ozMaterial: ABSBattery: 2pcs AAA 1.5V Batteries (Batteries Not Included)Color: Black 1High Performance: Electronic tension calibrator with high performance embedded microcomputer as the core, accurate weighing, stable performance, vibration resistance, high practicability. 2Manufacturing Material: The case of hand held tension calibrator is made of ABS engineering plastic, which is strong and durable, which can effectively prolong its service life. 3Exquisite Appearance and Portable: Appearance is exquisite and convenient to carry. LCD digital display design, which can know relevant data in a timely and effective manner. 4Circuit Damage Prevention: If the sign of low power is displayed, please replace the battery in time. If the electronic weighing device is not used for a long time, take out the battery to avoid damage to the circuit due to battery leakage. 5Unit Conversion: Press the "UNIT" key, and the weighing instrument will perform cycle conversion among the four units of KG, lb, catty, and oz.