Check the listing for details. ESE ES-110 GPS Based Frequency Standard Generator. Condition: Used, Made in United States. Listed at 1499.95 USD. Pictures are of actual unit ESE ES-110 GPS Based Frequency Standard Generator Used - In good physical condition - Key functioning - with scuffs and/or scratches. GRADE “B” 30-DAY GUARANTEE · Disciplined Temperature-Compensated Crystal Oscillator · GPS Timing Reference With 1 x 10-8 Accuracy · Two 10 MHz Outputs (1 Sine Wave & 1 Square Wave) · Phase Coherent 1 PPS Output · Indoor/Outdoor Antenna with 13' Cable · Ruggedized Desk-Top Enclosure “Key Functioning” Tested to power-up. We cannot provide technical assistance with installation or use. Factory reset, or any other software needs, are the responsibility of the buyer. Buyer assumes all responsibility for installation and setup. Please ask any needed questions before purchasing. See PICTURES FOR COSMETIC Condition.