The Energizer Hardcase H591S was announced in 2019, February With 5.99 inches, 98.9 cm2 (~75.9% screen-to-body ratio) TFT LCD, Powered by Mediatek MT6763 Helio P23 (16 nm) and running Android 8.1 (Oreo), the device delivered smooth performance and multitasking capabilities. while the Li-Ion 5800 mAh, non-removable ensured long-lasting usage.