In this listing, you are getting three 18650 batteries. All 3 are 2450mAh. All 3 are FLAT TOP style (not button style).
TWO are Panasonic CGR18650DA and one is a generic battery, same power. All 3 were used in an office flashlight and have 10 recharge cycles on them. They are rated for 500 recharge cycles, so they have a long life to go.
The Panasonic DA is a lithium-ion cell intended for use in 18650 devices. It can power a wide range of devices including flashlights, robot vacuum cleaner, digital spy camera, or health monitor.
Panasonic 18650 batteries are highly regarded for performance and safety.