TOP PU Leather Case with Bluetooth V3.0 Chipset Wireless Keyboard for Samsung Galaxy Note 4 (SM-N910) Perfect match to your Samsung Galaxy Note 4 (SM-N910) Standby time: 30 days. Uninterrupted working time: 30 hours Bluetooth V3.0 -- connection is more Fast and Stable Package Included: 1 x Bluetooth Keyboard Case, 1 x USB Cable, 1 x User Manual. Key Life: 5 million strokes. Operating Distance:10meters