Product photography, white background, studio lighting. A flexible thin curved PCB module, matte black silicone coating, shaped exactly like the underside of a baseball cap brim: wide arc shape, 22cm wide, 5cm tall, only 5mm thick, gently curved. On the surface: a single row of 6 small circular IR LED sensors (dark purple tint, 4mm each), flush with the surface, evenly spaced horizontally. Bottom edge: one USB-C port flush on the left, one small red tactile button on the right. Looks like a thin flexible wearable tech insert, NOT a power bank, NOT a box, NOT a battery pack. Soft matte finish, no screws, no vents, no logos. 8K photorealistic, sharp --ar 16:9 --style raw