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5 MHz probe of the Fetal Doppler ensures clear heartbeat detection from 12 weeks of pregnancy while using low ultrasound power for maximum safety
Support 1920 * 1080N HDMI and 1024 * 768 VGA output
Frequency: 490Hz
18650 Battery Charger Smart Charger Aa/Aaa Rechargeable Battery Charger Option:AA & AAA Battery Charger Digital signal encryption transmissionLiitoKala Lii Battery Charger aims to supply power for your rechargeable batteries. It also provides 4 kinds of current modes for you to choose ( 2A max. current meets quick charging demand ). Multiple circuit protections are for worry free use. Main features: 4 battery slots and 1 USB port 4 battery slots are powering Li ion batteries, Ni MH Cd, ferric phosphate lithium cell. Meanwhile, the USB port charges for your phone, iPad and other USB