Product Name: Bluetooth BeaconChip: nRF51822/nRF52832Multi-protocol: Bluetooth Low Energy, ANT, 2.4GSWD programmer (SWDIO, SWCLK, , GND)Power supply: 1 x CR2477 coin cell battery (not included)Modulation mode: low power consumption for networking, intelligent applicationColour:BlackMaterial:plastic+metalSize:46.22 x 46.22 x 17.17mmPackage Contents:1 x Bluetooth beaconOnly the above package content, other are not included.Note:Light reflection and different displays may cause the color of the item in the a little different from the real .The measurement allowed is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-dadangjia