Ram 64k rom 512k+64mb heart rate ichs3300 bluetooth ble 4.0 sensor support languages chinese and english support notification languages polish app support languages chinese(simplified/traditional), english, french, japanese, german, spanish, russian, italian, malaysia language, portuguese, korean ios 9. 0 above android 4. 4 above software function apk app name. Find my device remote camera history sms reviewed(latest 3 messages) sleep monitor alarm clock call reminder, sms, WeChat, qq, skype, whatsapp, facebook, linkedin, twitter, viber, line notifications sedentary reminder drinking reminder take medicine reminder meeting reminder hands raise light up no disturb mode(22: 00-8: 00 from this time no have notification, hand raise light up will don't work). Cautions 1. Prolonged contact may contribute to skin irritation or allergies in some users. If you notice any signs of skin redness, swelling, itchiness, or other skin irritation, please discontinue use or wear the product clipped over a piece of clothing. Continued use, even after symptoms subside, may result in renewed or increased irritation. If symptoms persist, consult your doctor. 2. This product is not a toy. Do not allow children or pets to play with your opta product. The product contains small components that can be a choking hazard. 3. The device contains electrical equipment that could cause injury if not handled properly. 4. This product is not a medical device, and is not intended to diagnose, treat, cure, or prevent any disease. 5. Consult your doctor before beginning or modifying any exercise program. Consult your doctor before use if you have any pre-existing conditions that might be affected by your use of this opta product. 6. Do not check call notifications or other data on the product's display while driving or in other situations where distractions could be hazardous.