The IPL Hair Removal is a personal, light-based, hair reduction device intended to be sold over-the-counter directly to the end user. The device provides hair reduction using Intense Pulsed Light (IPL) technology. It works below the skin's surface and does not involve any cutting or pulling, reducing hair growth with minimal pain. The device is only powered by the external power adapter and its IPL emission activation is by finger switch. The device mainly contains a Xenon lamp and a skin sensor to detect appropriate skin contact. If the device is not properly applied to the treatment area (in full contact with the skin), the device cannot emit the treatment light pulses. The device is for single-person use only. The main differences among models are as follows: Model Group Power Adapter Accessories (besides main unit & adapter) Number of Buttons & Key Functions SL-B301, SL-B300 12V2A Manual shaver, replacement head, sunglasses, pouch. 2 Buttons: • Power button (On/Off & select level), • Mode/Flash button. SL-B330, SL-B330-1, SL-B287-1, SL-B371, SL-B371-1, SL-B371-2 12V3A All include: Manual shaver, sunglasses, pouch. Except SL-B330 and SL-B371, other models include replacement head. 3 Buttons: • Power button (On/Off & select light intensity), • Flash button (start flash), • Ice Cooling button (select cooling mode / switch manual/auto flash). SL-B352 24V2A Manual shaver, replacement head, sunglasses, pouch. 3 Buttons: • Power button (On/Off & select level), • SHR Button (short press: On/Off SHR mode, long press: On/Off ice cooling), SL-B352-1, SL-B352-2 24V2A Manual shaver, sunglasses, pouch. (No replacement head). 3 Buttons: • Power button (On/Off & select level), • SHR Button (short press: On/Off SHR mode, long press: On/Off skin tone sensor), • Mode/Flash button. SL-B330-F 24V2A Manual shaver, replacement head, sunglasses, pouch. 3 Buttons: • Power button (On/Off & select light intensity), • Flash button (start flash), • Ice Cooling button (select cooling mode / switch manual/auto flash).