Manhattan Black iPad 2 & 3 Bluetooth Keyboard Case – Bluetooth v1.1/1.2/2.0 (CE, FCC, RoHS, WEEE certified), 2.4–2.48 GHz frequency range, GFSK modulation, effective range up to 10m, built-in 450mAh rechargeable lithium battery, 4–5 hours charging time, up to 45 hours working time. Package includes Bluetooth keyboard case, USB cable, and user manual Limited Lifetime Warranty