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Our products are all ex factory and do not include taxes. If you need to invoice, please consult customer service Can be mixed batch (i.e. one for each style), regardless of the amount, our store belongs to. Welcome new and old customers to come and choose. Wishing you a happy life Purchase Notice: Our products do not include watch box packaging. If you need watch box packaging, please contact customer service to place an order. By default, there is no watch box included in the order. Thank you for your understanding The pictures are all taken in kind Shenzhen Shengda Si Watch Co., Ltd. is a professional manufacturer of electronic watches, quartz watches and other products, with a complete and scientific quality management system. Shenzhen Shengda Si Industry and Trade Co., Ltd. has gained recognition from the industry for its integrity, strength, and product quality. Welcome friends from all walks of life to visit, guide, and negotiate business. Watch usage instructions: 1. When the second hand of a quartz watch jumps or stops every few seconds and the battery runs out of power, the battery should be replaced in a timely manner to avoid leaving a dead battery in the watch for a long time and causing damage to the movement. 2. The normal working temperature of a quartz watch is -5 ° C to 50 ° C. Do not place the watch in an excessively high or low temperature environment (such as taking a sauna or soaking in a hot spring), as this may affect the accuracy of the watch's timing and the lifespan of the battery. 3. A fully automatic mechanical watch must be automatically linked by the wearer's arm movement, so it must be worn for at least eight hours per day to ensure accurate timing. If there is not enough time to wear during the day, resulting in insufficient travel time, it is recommended to remove the watch at night by swinging it horizontally for one minute to supplement the winding. 4. Waterproof and waterproof watches have a waterproof effect in daily life, but they cannot be worn for swimming or diving. It is recommended not to wear a shower to avoid short circuit or corrosion of the movement coil after water ingress, which may affect the watch's timing. 5. Impact and vibration: Watches made of high hardness materials (such as hard alloy, ceramics, blue, etc.) have poor impact resistance and should avoid falling, collision, and friction with high hardness items. 6. Magnetic watches should be kept away from objects with strong magnetic fields such as televisions, magnets, speakers, etc., to avoid damage to the movement caused by the magnetic field and affect the timing accuracy of the watch. 7. Chemicals Watch should avoid contact with various solvents (such as alcohol, gasoline), mercury, cosmetics, sprays, adhesives, detergents, paints and other corrosive liquids or gases, so as to avoid discoloration, deterioration or damage caused by erosion of the surface of watch case and strap. 8. Carefully care for dust, moisture, and moisture accumulated on the case and strap, which may cause rusting. For this reason, the watch should be regularly cleaned with a soft dry cloth.