【Include】One portable Hot Stone Warmer (14 x 8.7 in), one adjustable digital controller, one use manual. Use this massage stone warmer, more convenient and sanitary, easy to clean. 【Heating Time】The heating time is about 15-30 minutes. The heating time is also affected by the ambient temperature. Please do not turn off the power after heating, as the stones will cool down quickly in cooler room temperatures. 【Digital Temperature Control】 The LCD digital temperature controller with selectable temperature setting of 70-160 °F (20-70 °C). More Safer than other stone warmer. 【Stylish】Compact and portable 14" hot massage stone heater bag with water-free operation. This hot stone massage kit is ideal for both travel and home spa use and takes up minimal space. 【110V】European customers pls do not order. The stone heating heater is designed for USE ONLY WITH 110V. If you wish to purchase and use it in Europe, please contact customer service for a customized version.