This latest heavyweight from Casio G-Shock's diving watch collection is known as the  GDF-100BB-1JF “Solid Black.” Aside from the customary G-Shock functions (shock resistance, water proofing, calendars, alarms and time zone support) the GDF-100BB-1JF also boasts a solitary all-black aesthetic, white backlighting and blue indigo. Retails for ¥13,524 JPY (approximately $170 USD)