I do not recommend the device rather than recommend it. If you really need the keyboard in the substrate, then consider another model, Combo Touch. Although the dimensions will be the same, if not more, but the buttons are at least unfastened.
🔋 VINTRONS FLUKE 3105035 Ti20-RBP Replacement Battery - Ti10, Ti20, Ti25, TiR Models
3 Review
🔋 Tri-Tronics G3 Field, G3 Pro Battery
4 Review
🔌 Dell AAZ60 Latitude 14 7470 E7470 Compatible Battery Cable Replacement - Efficient J60J5 Battery Wire Cord, 49W6G 049W6G C020029500 - Black
3 Review
🔋 HQRP 2-Pack Gumstick Battery Compatible with Sony NC-5WM, NC-6WM, WM-701C & More - Long-lasting Power for Multiple Sony Devices
5 Review