WEEMS & PLATH Atlantis Collection 8-Day Wind Ship's Bell Clock (Brass) Solid forged brass case, polished & lacquered. Traditional ship's 8-bell cycle, ringing every half hour. Precision 11-jewel bell clock movement. Battery not required, must be key wound weekly Expected accuracy is +/- 2 minutes. Screw bezel for easy access to movement. Provided with key, instructions & mounting hardware. Dimensions: Dial: 4" (102 mm) Base: 5 1/2" (140 mm) Depth: 2 7/8" (73 mm) Limited lifetime warranty. Hand-assembled in the USA