200m water resistant
LED light (Super Illuminator)
Mobile link (Wireless linking using Bluetooth®)
Dual time (Home city time swapping)
Measuring capacity: 23:59'59
Measuring mode: split time
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
Battery level indicator
Power Saving (hands stop to save power when the watch is left in the dark)
Full auto-calendar (to year 2099)
Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), 3 dials (dual time hour and minute, dual time 24-hour, day)
Accuracy: ±15 seconds per month (with no mobile link function)
Approx. battery operating time:
5 months on rechargeable battery (operation period with normal use without exposure to light after charge)
24 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
Size of case / total weight
GST-B100D 58.1 x 53.8 x 14.1 mm / 185 g
GST-B100 58.1 x 53.8 x 14.1 mm / 101 g
If you are not completely satisfied with your purchase, you may return your order within 30 days of delivery for a refund. To be eligible for return, items must be in their original purchase condition, including all product documentation. There are no refunds for custom orders.
For the full return policy, please click here
We can ship within Canada, USA and major counties in the world. For a list of countries, click here. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you checkout, an estimate shipping and delivery times will be provided for you.