Two new affordable smartwatches launch with aluminum alloy cases ⓘ Rollme Rollme AI Watch 2 (right) and AI Watch 3 (left) both feature aluminum alloy cases. The company has now brought two new AI-focused smartwatches to the market: the square-faced AI Watch 2 and the round-faced AI Watch 3. The AI Watch 2 uses a 1.99-inch HD display in an aluminum alloy square case, with a 520 mAh battery. The AI Watch 3 is smaller and round, with a 1.45-inch, 360 x 360-resolution display, aluminum alloy body, and 500 mAh battery. Colors: AI Watch 2 in black, orange, or beige; AI Watch 3 in black or silver.