Features 1、High Sensitivity: The instrument can work continuously for a long time without heating or overloading. It has high sensitivity and can detect the broken ends of very small steel needles. 2、Quickly Find: Metal detector can quickly and correctly find broken ends of steel needles in clothing, ensuring individual safety. 3、Power Reminder: When the power supply voltage is lower than 6V, there will be a continuous beeping sound, indicating that the power is insufficient and the battery of the same type should be replaced. 4、Ferromagnetic Inspection: This portable needle detector can be used for ferromagnetic impurities inspection of clothing accessories such as hardware buttons. 5、Scope of Application: The instrument can perform broken needle detection on all wearing products such as knitting, clothing, shoes, socks, and quilts. Specification Item Type: Handheld Needle Detector Material: Plastic Specifications: 1 Set Product Use: Household Scope of Application: Most Scenarios Battery Type: 9V Alkaline Battery x 2 (Shipped with Matching Battery) Battery Model: 6F22 Battery Capacity: 60mah Size: Approx. 6.5 x 14.5cm / 2.6 x 5.7in Package List 1 x Inspection Needle 2 x Batteries (Shipped with Matching Battery) 1 x Test Card