G-Shock HK - Javys on Twitter: "The watch is equipped with the "Connected Engine" module, which supports time correction using a Bluetooth connection. Stable operation is ensured by CASIO's original energy saving
Casio G-Shock GR-B100 Review — a new generation of aviators
Near Mint) Casio G-Shock GR-B100-1A3JF, Bluetooth Solar, GRAVITYMASTER 4549526193538 | eBay