features ultra-low power consumption, stable Bluetooth, -ble battery, and convenient parameter configuration. With the " Holyiot-bea-con " APP, it is convenient for customers to test and adjust advertising parame.ters. can meet different needs under different environmental conditions. Product:HOLYIOT-21053 Bluetooth version:BLE5.0 Chip:nRF52810 Configure APP: Holyiot-beacon Battery Type: Lithium battery Battery Lithium: battery Supply voltage: 2.2-3.6V Transmission distance: 50m Size: 68x25mm Button: Yes Weight with battery: 48g Weight (no battery): 31g Installation : adhesive Electrical characteristics: Quiescent Current:3uA current:8.0mA Average current:54uA (+4dB/500ms Equipped all sensors) Battery capacity:2700 mAh Battery life:4000 days (0DB, 1S) Working Temperature:-40~ 80 Colour:White Material:plastic Size:. 59 x 41.8 x 15.5mm Package Contents: 1 x nRF52810 bluetooth beacon Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.