Portable Sensor Device

I've designed this enclosure to hold:
Arduino Nano
Bluetooth Serial Modem
DH11 Sensor or Temp/Humidity/Pressure Sensor
Tiny RTC
3x tactile buttons

There are two case styles - one with three buttons and one with two.

There's extra space inside for a 3.7V LiPo if you want it to be more mobile. Otherwise, use a cable and one of those rechargeable cellphone battery packs.