Samsung Galaxy J7 (2017) which was recently spotted on Indian export import website Zauba, is now Bluetooth certified with version 4.2 from the Bluetooth Special Interest Group (SIG). Sadly, the listing does not reveal anything about the hardware specifications of the smartphone. 
In addition to this, the device has already received WiFi certification which revealed Android 7.0 on board. Further, as mentioned above the previous Zauba listing revealed a price tag of Rs 13,686 with no information on the specifications then as well. 
However, rumoured specifications conclude a 5.5 inch full HD display with 1920 x 1080 resolution. On the inside, the device is expected to be powered by Exynos Chipset coupled with 3GB RAM. Moreover, we might get a 13 megapixel rear camera and 5 megapixel front camera combination apart from 3000 mAh battery.
Recalling the Samsung Galaxy J7 (2016), the device was launched in India for Rs 15,990 in May 2016. It comes with a 5.5-inch full-HD (1080×1920 pixels) AMOLED display. It is powered by a 1.6 GHz Octa-Core processor with 3GB of RAM and 16GB of internal storage which can be further expanded to 128GB via a micro SD card. The device runs on Android 5.1.1 Lollipop operating system and packs in a 3,300 mAh battery. Moving on to the camera, it features a 13 megapixel rear camera with LED flash and a 5 megapixel front camera. This dual SIM smartphone also offers 4G-LTE, GPS/A-GPS, WiFi, NFC Bluetooth 4.0 and a microUSB 2.0 port.