Display: Accurate timekeeping, the annual error is only 8 seconds (industry standard error is 9 minutes), which is 10 times higher than the industry standard 2. Temperature Display: Built in high accuracy temperature sensor, the error is only 0.5? Industry standard is 3? 6 times higher than the industry standard 3. Plexi Glass Panel: Plexi glass panel, the stereo clock uses special plexi glass, the service life is more than 10 years 4. ARM Processor: Higher frequency ARM processor, and larger running memory, 4 memory modules static scanning display control scheme, and increase the dedicated constant current drive chip, 142 lights, the stroboscopic phenomenons is avoided, more stable brightness. 50m Visible Distance: Super large font, the visible distance is up to 50m, clearly visible, can be used for public spaces such as subways, high rail stations, hospitals, airports. Item Type: Double Sided Clock Material: ABS Input Voltage: 100240V US Plug Output Voltage: 5V Output Current: 3A Power: 14W Remote Control Battery: 2xAAA Batteries (Not Included) Size: Approx. 51.2 x 19.5 x 3.3cm / 20.2 x 7.7 x 1.3in Weight: Approx. 1910g / 67.4oz. 2 x Hanging Chain. 1 x User Manual. 1 x Remote Control. 1 x Power Adapter. Do not connect the 100240V wire privately, otherwise the motherboard will be damaged. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.