WiTtraveler Bluetooth Digital Lightweight Luggage Scale for iPhone7 and Samsung Galaxy S7 Imported Three in One - Bluetooth smart luggage finder, carry-on motion monitor and digital luggage scale Customized small size and lightweight, easy to carry Smart luggage arrival notification shows up on your Smartphone , support both iOS and Android Large backlit LCD display and support 40kg/88lb maximum capacity - Graduation of .2lb/.1kg Automatic power-off, easy to lift heavy luggage, runs on standard AAA battery ( 2 AAA batteries are included)