The iFixit teardown of the Apple Watch Series 3 found the guts of the device are mostly the same as the Apple Watch Series 2, minus the new LTE components that give the new device its cellular capabilities. The 1.07 Whr battery only provides a 4 percent increase over the previous model — by comparisson the Apple Watch Series 2 got a 32 percent improvement in battery capacity over the original Apple Watch. Apple promoted the barometric pressure…