The Doogee S90 is an unusual smartphone. Not only is it rugged and military spec but it features a modular system. The modular units featured in this video include, battery, night vision and walkie talkie. All the links you need will be below! Subscribe! http://j.mp/TechChannelSub Buy it now: https://amzn.to/2HBVplg Twitter: https://twitter.com/techflowtweets/ Instagram: https://instagram.com/techflowpics/ The Gear We Use: http://marzbar.co.uk/ Check out Alex's other YouTube channels! MarzBar: https://goo.gl/0QJ4uW Daily Vlogs: https://goo.gl/x64oXe Instagram: @AlexFroMarz Check out Editor/Filmer Jed! Main Channel: http://bit.ly/jedlilley Black Poncho: https://www.blackponcho.co.uk/ Instagram: @JedLilley Subscribe to TechFlow for weekly tech videos hosted by Alex Brooks / MarzBar! We give HONEST reviews on tech from all around the world to help you make the best buying decisions.