Simple Wall Pendulum Clock Silent Wall Clock for Living Room Bedroom Home Decoration Item Type: Pendulum Clock Material: Copper Color: As shown in the picture Product Size: Approx. 50x35cm / 19.7x13.8in Weight: Approx. 3045g / 107.4oz Battery: 2 x AA battery(Not included) Main Technical Indicators: Complies with international GB/6046-92 Time Accuracy: -0.8~+1.2 seconds/day Working Temperature: -10°C~+50°C Application: Gifts, living room, bedroom bedside, study room, hotel, home furnishing store, etc. Product Use: Beautiful Chinese wall clocks and natural works, complete wall decoration pendants, high-quality smooth hand-frosted surfaces, gifts for any occasion. Battery Installation: Install in the battery slot according to the positive and negative instructions (please use carbon batteries, alkaline batteries will damage the movement). Time calibration Insert the battery according to the polarity requirements, and turn the pointer calibration wheel on the back cover of the movement to calibrate the hour and minute hands to the required time.