1. The semi-liquid cover plate is clearer. The counter part is vacuum treated and isolated from the outside air and the measured water, so it is not easy to atomize to keep the counter clear. 2. Enlarge the inner cavity and reduce pressure loss. Under the condition of ensuring performance, the increase of the water inlet and outlet holes of the impeller box can effectively reduce the pressure loss of the water meter. 3. Install lead seals to prevent water stealing. The lead seal is added after inspection before leaving the factory, which means that the product is qualified, and it can also prevent tampering and increase safety. 4. High standards sensitivity. Accurate to 0.0001, combined display of numbers and pointers. 5. All copper fittings. Anti-rust full copper joints, equipped with leak-proof sealing ring. Product model: -S300E Product size: 11.5x7.5x8.5cm/4.53x2.95x3.35in Wing structure: Rotary wing Pressure rating: less than equal 1.0MPa Installation method: Horizontal installation Q&A: Why doesn't the new meter read 0? 1. The water meter be tested on the test bench before leaving the factory to accurate measurement. 2. Since the reading cannot be reset, it cannot be reset to zero. Please don't worry that the water meter you bought is not new. 3. Solemn promise: the products sold are all new products, and there be no secondary products! Please rest to buy. 4. Also remind you to beware of buying untested products, so as not to bring you unnecessary losses. Why is there water flowing out of the water meter? 1. When the water meter is tested, the water is tested, so there be water in it. 2. The remaining water not affect the internal structure of the water meter, and there is no need to control it. 3. The water in the dial is sealed and no sealing liquid flow out. Please rest to buy. Color:Blue Material:ABS+copper Package Contents: 1 * Smart Water Meter 2 * Sealing Ring 4 * Copper Accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.