Custom Jewellery Display Tablet Development

Engineering Proposal – Slim Custom Jewellery Tablet (MVP)
We are looking for an engineering partner to develop a slim, premium, purpose-built touchscreen tablet for our jewellery business.
The device will run our proprietary jewellery software and should provide a complete integrated solution:
* High-quality touchscreen optimized for jewellery images/design exploration
* Android-based embedded system or another suitable OS
* Processor, RAM, storage and Wi-Fi
* No camera required
* Slim, lightweight custom enclosure
* Reliable power/battery system
* Automatic launch of our application on startup
* Kiosk/locked-device mode
* Internet/cloud connectivity
* Local database and synchronization
* Jewellery gallery and product exploration
* Jewellery creation/configuration
* Customer and product management
* Billing/invoice functionality
* Future support for printers, scanners and other peripherals
* Secure OTA software updates
* Remote device management
* Thermal, reliability and long-duration testing
Engineering Scope
We need an end-to-end team covering:
Embedded Android + Electronics/PCB + Mechanical/Industrial Design + Software Integration + Prototype Development + Testing + Production Engineering.
The project should progress from prototype → engineering validation → production-ready hardware.
For the first prototype, commercially available computing components may be used to reduce cost and development time, followed by a custom if required.
Please provide your proposed technical architecture, development timeline, engineering cost, prototype cost, estimated production unit cost, deliverables, manufacturing capability, and ownership of project-specific designs/software.
If you want, I can also make this into a more professional RFP-style version that sounds like it is coming from a serious technology company.