Please include the specifications of the product when filling up your order. On the lower part portion of product image, then click "add note" to specify your prefer color, memory and other specification.
(ex. Vivo V15, 128gb, 6gb RAM, Coral Red) (ex. BT HF PRO SY BT1607, Red) 
 
Type:Smartphone
Shape:Bar
OS:Android
OS ver:Android v6.0.1 Marshmallow
SIM:Micro SIM, Nano SIM, Dual SIM
CPU:Quad Core Processor
CPU Speed:1.4 GHz
Storage:16GB
RAM:2GB
External Storage:microSD up to 256GB
Battery:Unremovable 2400 mAh , Internet Usage Time(3G): Up to 10 hrs , Internet Usage Time(LTE): Up to 13 hrs , Internet Usage Time(Wi-Fi): Up to 12 hrs , Video Playback Time: Up to 12 hrs , Audio Playback Time: Up to 54 hrs , Talk Time (3G WCDMA): Up to 16 hrs
Display Size:5 inches
Resolution:HD (720 x 1280)
Type:2G, 3G, 4G (LTE)
      2G:GSM850, GSM900, DCS1800, PCS1900
      3G:UMTS , B1(2100), B2(1900), B5(850), B8(900)
      4G (LTE):FDD LTE , B1(2100), B3(1800), B5(850), B7(2600), B8(900), B20(800) , , TDD LTE , B38(2600), B40(2300)
Speed:HSPA, LTE Cat4 150/50 Mbps
Main Camera:13 MP
Front Camera:5 MP
Features:WiFi, Hotspot/Tethering, GPS, Bluetooth, Flash
Dimensions:142.8 x 69.5 x 8.1 mm
Weight:143 g