CASIO G-SHOCK - Made for aviation - The new GR-B100 is equipped with Bluetooth® technology and provides accuracy required during flights! bit.ly/ GR-B100-1A2ER_eu | Facebook
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Casio International Edition G Shock Gravity Master Carbon Core... for $599 for sale from a Seller on Chrono24
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Casio G-Shock Bluetooth Gravity Master GRB-100-1A2