I thought this is a interesting product - I don't think I have ever seen a finder watch!

Elastic Quartz Finger Creative Fashion Steel Round Ring Watch 

https://www.tripleclicks.com/14288642/detail?item=495807

Description
Creative Fashion Steel Round Elastic Quartz Finger Ring Watch Lady Girl Gift
Stylish, Practical, cute fashion ring style watch
Luxurious, Generous, personal use, gifts of high quality goods!
Small button next to the dial can adjust the time
Let your fingers to add color, filling endless charm!
Perfect gift for young lady girls!
Movement : quartz
Case and strap Material: Steel

Specifications:
Ring Diameter: app 1.7 cm Flexible, you can stretch
Watch Face Diameter: app 2.1cm
Band Width: app 0.6cm
Ring size: stretchable
Color: Blue,Pink,Black
Net weight: 14g


Packing content:
1 x Finger Ring Watch