Hama HA202, 3.5mm, Lithium Polymer (LiPo), 8 h, Battery, 37 mm, 28 mm Hama HA202. Headphone connectivity: 3.5mm. Battery technology: Lithium Polymer (LiPo), Battery life: 8 h. Power source: Battery. Width: 37 mm, Depth: 28 mm, Height: 54 mm