2PCS HD Smart Wireless Peephole Doorbell, Visual Surveillance, Anti-theft Photo Door Mirror, Home Electronics HD smart wireless peephole home electronic doorbell visual monitoring anti-theft camera door mirror Color: golden Material: ABS engineering plastics Weight: 0.6kg Applicable door hole diameter: 14-22mm/0.55-0.87" Applicable door thickness: 35-120mm / 1.38-4.72" Product Size: Indoor unit: 127 x 68 x 13mm/5.00x2.68x0.51" Outdoor unit: diameter 58 x 13mm/2.28x0.51" feature: -2.8 inch TFT LCD display. -Infrared night vision, doorbell sound, camera function. -Built-in memory, cyclic storage, no need to insert a memory card. -Minimalist design, simple operation. -0.3MP professional security HD camera lens, wide angle. -90 degrees, long standby time.