Product Name: Bluetooth beacon Battery: CR2016 Working time: 4-5months Based on broadcasting rate 1s' Distance:: m in open air Dimensions: 40.3*23.9*2.6mm Chipset: Nordic nrf51822 Application: iOS7.0 above with tool APP & Andriod BLE 4.0 above with SDK Certificates: CE FCC ROHS MFI Function: advertisement Broadcasting or info. Color: Black & Silver