Brand new and high quality. Installation: 1. Connect the C/O ring plug to the ringer's jack. 2. Connect the ringer's plug to the telephone. 3. There are high and low switches for your choices. Features: Flashing light warns you of incoming calls in quiet environments. It has a lamp and a switch to choose between a high and low frequency ringer. The switch has 2 modes: One for the high frequency ringer and the other for the lower frequency ringer. Easy to use. Works with simple connection to the telephone line. Ideal solution for the hearing impaired, or for use in noisy environments, actually anywhere indoors. Ringtone amplifier for telephone only, other accessories shown in the picture are not included! Specification: Material: Plastic Color: White Dimension: 97x57x26mm/ 3.82x2.24x1.02in Quantity: 1 pc Note: 1. No retail packaging. 2. Please allow 0-1 cm error due to manual measurement. Please make sure you do not mind before you bid. 3. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Ringtone Amplifier for Telephone