After a successful launch of the Flip British Plug on Kickstarter , Oneadaptr announced the Flip World product range in November 2017. They offered a 30% discount for those who pre-order those products with the coupon code, WorldIn18.
Flip World product range has four products under it:
- Flip Duo World  (US$29.99/S$40)
- Flip Quad World  (US$44.99/S$60)
- Flip Power World  (US$49.99/S$66)
- Flip World Add-On  (US$9.99/S$14)
If you are an existing owner of any Flip products (like me), you can just get the Flip World Add-On for US$9.99 (S$14).
I backed the Flip Quad  back in 2016 and I have been bringing it along in my bag wherever I go. The plug is compact and extremely convenient.
When I travel, I also bring it along together with a travel adapter. So the Flip World Add-On is a good idea. Now, I don’t have to unfold the Flip Quad to use it in other countries.
Since I already have the Flip Quad and this time around with the 30% discount, I decided to get the Flip Duo World.
Flip Duo World is essentially just Flip Duo with Flip World Add-On.
Flip Duo is a dual USB port charger that can give you a combined charging output of 3.4A. It comes with both US/AU Plug add-on and EU Plug add-on.
The Flip Duo World weighs 95 g. If you choose not to bring out the Flip World Add-On, Flip Duo itself weighs 57 g and is 18 mm in thickness.
I paid US$28 (S$37) for both the Flip Duo World and Flip Word Add-On. Shipping to Singapore is an additional US$12 ($14). In total, it costs US$40 (S$53).