K10 Smart watch supports SIM CARD Follow this link to view our catalog on WhatsApp: https://wa.me/c/263772928871 Function Alarm Clock, Fitness Tracker, Heart Rate Tracker, Message Reminder, Push Message, Sleep Tracker Screen Size Battery capacity 380 mAh Screen size 1.54 inch Standby time about 3 days Charge method Micro 30usd each or buy 2 for 50usd
$30