product,q1_sales,q2_sales,q3_sales,q4_sales
Wireless Headphones,245,310,280,420
Smart Watch,120,180,160,250
Bluetooth Speaker,85,95,70,110
Laptop Stand,340,280,320,290
USB-C Cable,520,480,450,610
Portable Charger,150,140,120,180
Gaming Mouse,180,220,200,380
Webcam,90,110,85,140
Keyboard,160,190,175,210
Monitor,75,95,80,120
Tablet Case,200,180,150,220
Phone Charger,380,420,360,480
External Drive,110,130,115,155
Desk Lamp,95,85,70,100
Ergonomic Chair,45,60,55,85