Features:
[Real-time Video & Remote Control] Available to  watch the real-time image even when you are out, download the APP Ulooka and the mobile receive they notify when someone rings the doorbell.
[Hidden your Real Voice] Provide 2 different voice sound - male voice and funny sound, one button to switch and hide your real voice, safe for single people who live alone.
[Clear Night Vision] Equipped with LED infrared light. Intelligently switch to infrared night vision mode. The image is clearly visible, you can see clearly without light.
[Equipped with Doorbell Chime] Strong and stable signal, easy to pair up, the transmission range between the doorbell and chime is up to 10 meters; with USB power supply, easy to install, no worry of low battery.
[Power Supply] The doorbell is powered by built-in 1000mAh large battery, has long working time after fully charged through power bank, AC adapter, computer, and more, no need to charge frequently.

Specification:
Size: 4.17 x 0.94 x 1.77in
Receiver Size: 2.36 x 0.78 x 1.49in
Resolution: 1280x720
Doorbell Visual Recording Range: 5m
Audio Decoding: g.711/s
System: Android 4.3 or iOS9.0 or later
Battery: 1000mah
Storage: Support 32G
Package Size: 13x8x5.5cm/5x3.1x2.1in
Package Weight: 179g/6.3oz

Note: This product supports sd card (sd card not included, needs to be purchased separately)

Packing List:
1 x Doorbell 
1 x Chime
1 x Doorbell Backplate
1 x User Manual