No sharp edges and no heating up, great for babies to play with, soft material improve the touch ability of your little baby. Quick User Guide1. Switch the bottom power button to change light modes or turn off; 2. Press the \"\"1 Hour\"\" button once to set 1 hour timer; 3. In \"\"☼\"\" mode - 1) hold the top to adjust the brightness; 2) double tap the top to turn on/off standby mode; 3) touch and hold the top for 1. 5s to enter night light mode; 4. In RGB mode, Tap once to set/change color you desired. Technical Specifications: Dimensions: 3. 4 x 3. 4 x 4. 2 inchesWeight: 155g Power: 1. 5W Luminous Flux: 100Lumen Battery Capacity: 1800mAh Charging Time: 3h Working Time: 5 - 100h (lowest brightness but not night light mode) Working Voltage: DC 5V / 1A Material: ABS + Silicone