Develop bluetooth beacons for proximity alerts


Job Description

I need BLE beacons developed similar to this: or
Qualcomm Gimbal.

Beacons should be detectable by BLE-enabled smartphone, have enough battery for couple month and a nice case.

Please DO NOT respond without time and cost estimate.
Optional: include production cost estimate.

NOTE that my budget is not accurate since I don't know how much can it cost.