Casio Edifice Mobile Link Solar ECB-900PB-1A ECB900PB-1A 100M Men's Watch The digital displays in the watch works with the analog hands to provide easy-to-understand information, for which, it connects through Bluetooth® to your smart phone. Due to this same reason, it ensures absolutely accurate timekeeping; including DST, for any country in the world. It also features a motorsports inspired 1/1000-second stopwatch with 200 lap memory and also indicates your average speed apart from showing you time in more than 300 cities around the world.