Between 5-8cm from the item or surface
10-30 seconds for effective sterilisation result.
About 2.5 hours to charge. Blue light will show when charge is complete.
If you only use the UV-C light function, and use it 10 times per day (1 minute per use) it can last up to 24 days. It takes about 4 hours to run out of power if you only use the wand to charge your mobile phone.