Generally quartz, electronic tables require battery powered, the battery life is generally 1--2 years. When you shake hands with the watch, go slow, stop and go other abnormal phenomena, we should consider replacing the battery, the current button batteries inexpensive, but open the watch is a technology live, we do not recommend disassemble Watches Replace, Replace best professional repair surfacing. Note that after the watch is worn-out and should be replaced as soon as possible or removed to avoid battery leakage and damage the movement. Eight: Watch how to do that is magnetic by magnetic watch once, will affect the accurate time to eliminate the method is very simple, just were not looking for a magnetic hoop, ring on the table, slowly wear to wear to a few minutes later. the watch will demagnetization recovery. Nine: 1. wear watches during routine maintenance of the watch, the hands sweat on the case is corrosive steel case because it is nickel-chromium alloy, corrosion resistance better, semi-steel case is copper, long-term contact with sweat , susceptible to corrosion, should always wipe the sweat with a soft cloth or plastic table mat care to prevent the erosion of sweat. 2. Do not open the back cover, so as not to affect the movement of dust into the normal operation of the watch. 3. Do not watch on there within mothballs wardrobe, table oil to prevent deterioration. 4. Do not watch on the amp, stereo, television, in order to avoid magnetization. 5. Long-term storage does not wear a watch, should be winding once a month on a regular basis, automatic movement of the watch should gently rocking back and forth a few minutes or worn on the wrist for some time so that it automatically on a wound. The parts will not be long at rest, in order to ensure the operation of the performance table machine. 6. Long-term storage does not wear a watch, should be winding once a month on a regular basis, automatic movement of the watch should gently rocking back and forth a few minutes or worn on the wrist for some time so that it automatically on a wound. The parts will not be long at rest, in order to ensure the operation of the performance table machine. 7. To save the protective packaging used watches. These protective watch box, watch can give the most secure protection in the event do not usually wear, avoid the watch is broken or crashed. Also recommended when normally do not wear watches, habit into the box, it can greatly reduce the chance of damage to the watch. 8. usually best not to wear the same watches every day, should be more prepared to watch several different alternate use, in addition to a wealth of personal style, but also to avoid dust, dirt confined to the same body watches on. 9. Do not go to sleep wearing a watch, if the watch is luminous watch, it will bring the body adverse effects. This is because the light-emitting material on luminous watch dial pointer and painted, mainly a mixture of radium and zinc sulfide, radium rays can stimulate the release of zinc sulfide crystal light, when to sleep, if wearing a watch, the body would be eight to nine hours of radium radiation on the human body has certain hazards. 10. Usually watches are not suitable for use in a hot water bath, sauna, or large temperature changes environment. Because waterproof apron will be affected by temperature, thermal expansion and contraction voids and thus accelerate the aging effect waterproof. And the water vapor molecules around the relatively small, it is easy to penetrate the meter body, causing internal mechanical damage. Material: high quality alloy, copper cover material: high quality alloy, copper cover, can do LOGO (laser or corrosion) Mirror material: ordinary glass, plastic mirror Dial: free design and branded logo (LOGO) Movement: Japan imported quartz Movement / domestic quartz movement battery: domestic battery, battery imports (1 Year - 3 years of life) Function: time display waterproof: life waterproof, 30 meters waterproof comprising: dial any LOGO design (according to the specific requirements) Packing: single table into a bubble bag safety packaging (wooden / plastic boxes / cartons are) Sample time: 7-10 days shipping time: 25-35 days NOTE: guests can start models or drawings given Order: 500 From Shipping: The larger the amount of the discount, support Alipay