Smart Wifi Visual Doorbell HD Night Vision Bell Phone Remote Camera Sound Can Change Wirele Home Security Battery Doorbell Product Features: 1. Super long standby time.2. Built-in rechargeable battery3. Support remote video calling4. Support voice change, women's voices into men's voices5. Cloud storage, support playback, capture6. Convenient installation, can be glued, can be perforated7. Support up to 10 family members at the same time8 built-in 850N night vision lights, night can also see very clearly Product Parameter: Color:White Material: ABS material, PCBA, polymer battery, speaker, camera, hardware Battery capacity: 800mA Power input: 5V=2A Charging time: 1.5 hours Standby time: 2 years or more Record keeping: Three days of permanent rolling storage, 3 days unlimited Intercom type: Colour video Camera resolution 480*640 Doorbell size L*W*H: 80*53*22 Dingtone size L*W*H: 55*42*25, (including USB: 12mm height) Net weight of doorphone: 65.7g Net weight of the ding-dong: 23.3g Gro weight : 134.8g Package size 100*35*145 mm Package include: *Doorbell unit x1 pcs *Indoor ding-dong unit x1 pcs *Charging cable x1 pcs *Auxiliary installation sticker x1 pcs *Small screws x3 pcs *Manual instruction x1 pcs