This product has the advantages of ultra-low power consumption, stable Bluetooth performance, small size and waterproof sealing. Product name: BLE beacon tag Companion APP: Holyiot-beacon Bluetooth version: Bluetooth 5.0 Chip: nRF52810 Accelerometer: 3 axis Battery model: CR2032 (not included) Supply voltage: 2.2-3.6V Waterproof: IP66 Function: Indoor Positioning Colour:green+white Material:ABS Package Contents: 1 x 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. Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.