1. Built-in battery, 1-2 months ultra long battery life depends on the mode 2. 18dB ultra low noise, mute operation 3. Compact & portable, desktop & wall-mounted 2 installation methods 4. aroma oil bottle, detachable & replaceable Modes: 1. Blue light: 2 sec each 15 min, 24 h loop 2. Green light: 2 sec each 30 min, 24 h loop 3. Red light: 2 sec each 60 min, 24 h loop 4. Green light: Press the button and hold to continuously, release to stop. Battery capacity: 300mAh Charge port: Type-c Charge time: 40min Aroma oil bottle capacity: 35ml Size: 150 x 66 x 34mm color:White Material:ABS Package Contents: 1 x Diffuser 1 x USB cable 1 Set x installation accessories 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.