This product is an extension unit alone. This product is brand new but does not come with the outer box or instruction manual. This is a set of a child unit, a charging stand, and a rechargeable battery. Please note that the main unit is not included. Equipped with an LED light to notify you when there is an incoming call. Flashes when incoming calls, so you can easily notice the call you have been caught when you make a call by a vacuum or other sound that is hard to hear the calls. External Dimensions (H x W x D): Approx. 6.9 x 1.9 x 1.0 inches (175 x 49 x 25 mm); Charging Base: Approx. 1.9 x 2.9 x 3.5 inches (47 x 73 x 90 mm); Weight: Approx. 5.5 oz (140 g) (including battery pack); LCD screen: Viewing area (2.1.6 x 2.6 inches (42 mm) Incoming Call Notification LED The phone is equipped with an easy-to-read white backlight LCD and an approximately 1.8 model of kanji display. Phone book is easy to find lists. Equipped with an LED light to notify you when there is an incoming call. Flashes when incoming calls, so you can easily notice the call you have been caught when you make a call by a vacuum or other sound that is hard to hear the calls. In addition, when there is an absent call or home recording, it will flash slowly, making it convenient to tell you that there is an incoming call when you get back from the house. Personal fax extension for cordless phones. Different functions available depending on the base unit used. Uses a wireless communication system of 1.9 GHz. Not for use with all 2.4GHz devices. Expandable Parent Unit Personal Fax KX-PD550/ KX-PD225/ KX-PD750/ KX-PD615/KX-PD715/KX-PD915/KX-PZ610/KX-PZ618/KX-PZ710/KX-PZ910 KX-PD305/KX-PD505/KX-PD300/KX-PD5 00 KX-PD 102/KX-PD604/KX-PD684 KX-PD600/KX-PD670 KX-PD515/KX-PZ510 KX-PD205/KX-PD285/KX-PZ200 Cordless Phones VE-GD78/VE-GD27/VE-GD56/VE-GD55/VE-GD55555/VE-GE-GE-GE-GD D66/V E-GD76/VE-GZ50/VE-GZ61/VE-GZ71/VE-GZ718 VE-GD72/VE-GD720/VE-GDW54 VE-GD60 VE-GD36/VE-GZ31 VE-GD35/VE-GZ30 10/VE-. GD25/VE-GE10/VE-GZ20/VE-GZ208 VE-GDX16/VE-GZX11 VE-GDS02