From the BaselWorld Press Kit:
Exp800.jpg
Expb800.jpg
Expa800.jpg
Technical Specs:
EXPLORER TECHNICAL SPECIFICATIONS
REFERENCE (CASE / BRACELET): 214270 / 77200
Case
Diameter: 39 mm
Material: 904L steel
Bezel: fixed, smooth
Winding crown: Twinlock
Crystal: sapphire
Waterproofness: 100 m (330 ft)
Movement
Calibre: 3132
Self-winding: Perpetual rotor
Oscillator: frequency: 4 Hz (28,800 beats/hour)
Parachrom hairspring with Breguet overcoil
Paraflex shock absorbers
Precision: COSC-certified chronometer
Power reserve: ~48 hours
Dial
Hour markers: luminescent Chromalight
Hands: luminescent Chromalight
Bracelet
Material: 904L steel
Type: Oyster
Clasp: Oysterlock with Easylink comfort extension link