Sandisk 128GB MicroSDXC Class 10, 100MB/s – £13.99 at Picstop / ebay
• Form Factor: microSDHC™ and microSDXC™.
• Waterproof, Temperature Proof, Shock Proof, X-RAY Proof
• Performance/Speed: 100MB/s.
• DimensionsmicroSD™: 0.59in x0.43in x0.03in (14.99mm x 10.92mm x 1.02mm).
• Operating Temperature: -13°F to 185°F (-25°C to 85°C).
• Storage Temperature: -40°F to 185°F (-40°C to 85°C).
• Compatibility: Compatible with all microSDHC and microSDXC supporting host devices.
• Warranty: 10-year warranty.