... ,Working time: 135Hours 4,Standy time: 90day Folding Protective Aluminium Bluetooth Keyboard for iPad 2 / 3 H5088Packaging & Delivery : Packaging Detail:Dimension :245 ... output power: up to 4bm as maximum, good for your health with lowest radiationOperation distance: 10mOperating temperature:-10-55°CWorkable ... 197(W)*11.6(H) mmWeight: 295±30g Aluminum Case + Wireless Bluetooth Keyboard for iPad 2 / 3