New Casio G-Shock G-SQUAD DW-H5600 smartwatch with Polar algorithm revealed

All of the smartwatches have a built-in optical sensor which can be used to track your heart rate, and you can also track your blood oxygen levels with the gadget. An accelerometer tracks your steps though the wearables do not have GPS; linking the watch to your smartphone enables you to track your distance, and route travelled while walking or running. Like the G-SQUAD GBD-H2000 smartwatch launched earlier this year, the DW-H5600 uses the Polar algorithm, providing workout and sleep recovery analysis and breathing exercises.

The watches are compact, measuring 51.1 x 44.5 mm (~2.01 x 1.75-in) and weighing 59 to 65 g (~2.08 x 2.29 oz). Casio suggests the smaller size is thanks partly to a thin LCD screen and compact battery. You can recharge the smartwatch via USB or with solar power, fully recharging it for a typical week of use in around two hours when placed on a sunny windowsill. Customers in Japan can pre-order the Casio G-Shock G-SQUAD DW-H5600 smartwatch from April 21 starting from ¥41,800 (~US$312); a full price list can be found below. The company has yet to announce details of an international release.

Buy the Casio G-Shock Move GBD-H2000 on Amazon

• DW-H5600-1JR (black with full resin bezel) - ¥41,800 (~US$312)
• DW-H5600-2JR (light blue with full resin bezel) - ¥41,800 (~US$312)
• DW-H5600MB-1JR (black with black ion-plated stainless steel front bezel) - ¥44,000 (~US$328)
• DW-H5600MB-2JR (blue with blue ion-plated stainless steel front bezel) -  ¥44,000 (~US$328)
• DW-H5600EX-1JR (limited edition 40th Anniversary model) - ¥60,500 (~US$451)