Quantity   Component name
1 × HEART RATE PULSE SENSOR
1 × OLED DISPLAY MODULE Blue 0.96 INCH 128X64 4PIN (29.28mm * 27.1 mm)
1 × Expand BLUNO BEETLE V1.1 (28.8mm * 33.1mm * 3.8mm)
1 × 1A LITHIUM BATTERY CHARGING MODULE (6mm * 30mm * 17mm)
1 × Battery LiPo 500mAh 3.7V (22.1mm * 17.2mm)
1 × 50mm focal point rectangular lens 16x26mm Probably final
1 × 20x20mm right angle prism Not final. I need more research.