... for iPad/iMac/iPhone with CE, FCC Mark Specifications:Bluetooth Specification: Version 3.0Range of Frequency: 2.4GHz SpectrumOperating ... mode without pressing any keys after 30 minutes2. BROADCOM Bluetooth chipset3. Built-in lithium battery and intelligent charging ... charge indicator, low-power indicator, case conversion indicator, Bluetooth indicator on the code4. Adjust keyboard angles by adjusting ...