Seiko Solar Stopwatch SVAJ701 with NFC Data Communication Function

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction. 【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary. 【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product. 【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. Glass material: acrylic glass Waterproof function: Reinforced waterproof for daily life (5 ATM water resistant) Case size: 72.2×60.3×21.0mm After-sales service: 1 year warranty Specifications: Monthly difference conversion ±30 seconds (when used at temperatures between 5 degrees and 35 degrees C), NFC data communication function, lap/split measurement function, 1/100 second measurement, 100 hour meter, lap memory function (can record separately within 300 memories), solar charging function (with power save sleeve function)