Note: Power adapter is needed but not included for this led strip lights. There is also " No remote" for this strip lights, you need to turn off the lights by unplug the power adapter.Specification Length: 16.4ft/ 5M Number of Leds: 300 Leds Power adapter require: 12V 2A wall outlet Package include: 1* 16.4 ft led strip lights 5* fasten clip 5* screw 2* white connector Common Questions: Q :The adhesion is weak? A : To be honestly, we have change several glue for this strip lights to enhance the stickness, and we have have choose the best one. The adhesive on the back is strong as long as the surface was clean and smooth. But the stickiness is still not strong enough for some occasion, so we have put some free fasten clip and screw on the package. You can use it to strengthen it if you need. Some of our customers would also use 3M super weather strip adhesive or gorilla double sided tape to reinforce that. Q: What power adapter should I use? A：Please use 12V 2A power adapter. Q: Is this strip lights cuttable? A: Yes, this led lights strip is cuttable. It can be cut every 3 LEDs along the cutting marks. You can connect it again by using the pins that we send to you. There are two connectors on every package.