Altusmetrum EasyMini V2.0

Recording altimeter for model rocketry
Supports dual deployment (can fire 2 ejection charges)
Barometric pressure sensor good to 100k feet MSL
Designed to use a battery supplying 3.7V-12V.
1.5 x 0.8 inch board designed to fit inside 24mm airframe coupler tube
1MB on-board data logging flash
Weighs only 6.5g (less than 1/4 oz)