[Casio] B640WD-1AV Digital Watch - Silver

[Watch Functions]

● Stopwatch (1/100 second, 24-hour timer, with split function)

● Timer (set unit: 1 second, maximum set: 24 hours, measures in 1/10 second increments, 10-second time-up sound)

● Hourly time signal, alarm

● LED light (afterglow function), illumination color: amber

● Fully automatic calendar

● 12/24 hour display switching

● Accuracy: Average monthly difference ±30 seconds

● Battery life: Approximately 3 years (value when the battery is replaced with a new one. The battery pre-installed in the watch is a monitoring battery for checking the watch's functions and performance, so the battery life will be shorter.)

・[Size] Case size (vertical x horizontal x thickness): 38.9 x 35 x 9.4 (approx. mm), Belt: width approx. 15 (buckle side) ~ 20 (case side) mm, lug width approx. 18 mm, band fitting size: 135 ~ 200 mm, Weight: approx. 49g ・[Materials] Case: resin, Band: stainless steel, Windshield: resin glass ・[Water Resistance] 5 ATM water resistance ・[Included Accessories] Japanese instruction manual (photocopy), foreign language instruction booklet, plain generic box (not a [Casio] box) ・[Band Size Adjustment Method] Free slide type (separate tools required)

【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.