(1) Onaji Pawa Card £19.99, myonaji.com It may not have the catchiest name but this credit-card sized gizmo should fit in most wallets or purses and promises to top up your battery life by around 30%.
Univalve
Definition:
(n.) A shell consisting of one valve only; a mollusk whose shell is composed of a single piece, as the snails and conchs.
(a.) Alt. of Univalved
Example Sentences:
(1) An vibrating electromagnetically driven univalved artificial heart was newly developed in our team.
(2) A univalved artificial heart (AH) powered electromagnetically in the frequency range of 1-30 Hz was developed to obtain a totally implantable AH.