Feature 1 Automatically Updated When Changed: Retailers use electronic shelf label(ESL) systems to display product prices on shelves. Whenever the price is changed from the central control server, the product pricing is automatically updated 2 Update Multiple Channels: With just a few clicks from the remote server, the electronic shelf price tag can automatically update thousands of videos on multiple channels at the same time 3 No Need For Paper Labels: There is no need for paper labels, and no need to deploy cumbersome store personnel to manually replace the price labels on each shelf 4 No Physically Re Label: With electronic price tag, employees in stores, supermarkets, schools, and hospitals do not have to physically re label the labels 5 Small In Shape: ESL is small in shape, easy to carry and install, and the battery can be replaced, which is convenient to useItem Type: Electronic Price TagMaterial: ABSPurpose: Electronic price tagConnection Method: BluetoothBattery Type: 2 x Button batteries in series(built-in)Battery Model: CR2450Nominal Battery Capacity: 1240mAhFunction: 1. Efficiency: 30 Minutes for less than 20,000 units2. Success Rate: 100%3. Transmission Technology: 433 MHz radio frequency. Non interference ability of Wi-Fi devices such as mobile phones.4. Transmission Range: The coverage range is approx. 30 ~ 50meter / 98.4 ~ 164ft.5. Display Template: Support dot image display.6. Working Temperature: Normal label 0~40, refrigeration environment label -25~15.7. Communication and Interaction: Dual wave communication, real time interaction.8. Product Standby Time: 5 Years, the battery can be replaced.9. Docking System: Support text, Excel, spreadsheet, intermediate data guide into, user defined development, etc. Package List1 x Electronic Price TagNoteThe Bluetooth version ESL only supports for Android phones.