The listing reveals that the Samsung Galaxy On5 (2016) - carrying a SM-G5700 model number - is powered by an octa-core processor and sports a 5-inch HD display.
It has 3GB RAM and 32GB internal memory, and packs in a 2,600mAh battery. Measuring 142.8 × 69.6 × 8.1mm and weighing in at 142g, the phone features a 13MP/8MP camera combo and runs Android 6.0.1 out of the box.
On the other hand, the Samsung Galaxy On7 (2016) with model number SM-G6100 is also powered by an octa-core processor but sports a 5.5-inch full HD display.
While memory configuration and camera combo remain the same as the On5 (2016), the phone packs in a larger 3,300mAh battery. Measuring 151.5 × 74.9 × 8.0mm and weighing in at 166.7g, the On7 (2016) also runs Android 6.0.1.
Design-wise, both Galaxy On7 (2016) and On5 (2016) look broadly the same.