suitable for NRF51822 Bluetooth Beacon Tag Eddystone Ibeacon Proximity Locator Beacon-FO SHAN RAN WANG Product Name: Bluetooth Beacon Chip: nRF51822/nRF52832 Multi-protocol: Bluetooth Low Energy, ANT, 2.4G SWD programmer (SWDIO, SWCLK, VDD, GND) supply: 1 x CR2477 coin cell battery (not included) Modulation mode: low consumption for networking, intelligent application size:46.22x46.22x17.17mm Material:Plastic + Metal colour:Random Color Colors are random and cannot be specified Package Contents: 1 x Bluetooth beacon Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm. Please pay attention to the title and description when buying, and pay attention to the title and description when buying.