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The Samsung Galaxy Watch4 Classic combines an elegant design & health-monitoring tools like ECG heart rate.1 The stainless-steel case & rotating bezel are practical & stylish. With AT&T NumberSync you can call & text right from your wrist using your smartphone number. 2
|Size (inches)||1.79 x 1.79 x 0.43|
|Display size (inches)||1.4|
|Resolution (pixels)||450 x 450|
|Video playback||Up to 720p (30fps) (via 3rd party apps, no video player preloaded)|
|Front-facing camera||Via 3rd party apps, no video player preloaded|
|Talk time (hours)||Up to 2.8|
|Standby time (days)||Up to 2.9|
|Wireless charging capable|
|Time to charge to 50%||Up to 50 minutes|
|Time to charge to 100%||Up to 110 minutes|
|Cores||Dual-core, 2 at 1.18GHz|
|Internal memory storage||Up to 16GB|
|Wear OS||Wear OS Powered by Samsung|
|Voice dialing and voice commands|
|4G LTE||Bands 2, 4, 5, and 12|
|4G||HSPA+ with enhanced backhaul|
|3G - UMTS||850/1900MHz|
|HD Voice capable|
|Wi-Fi-capablity||2.4GHz & 5.0GHz|
|Near Field Communication (NFC)||Open, Secure|
|Bluetooth® technology||v5.0 + EDR, A2DP, HS, LE|
|Wireless emergency alerts (CMAS) capable|
|Sensors||Accelerometer, Ambient Light, Barometer, Gyroscope, Heart Rate, E-Compass, Magnetometer, ECG|
|Text messaging||Send and receive text messages from your wrist (messaging charges apply).|
|Microsoft Direct Push|
|Supported music formats||MP3, M4A, 3GA, AAC, OGG, OGA, WAV, AMR, AWB|
|Real Time Text (RTT) capable|
|Device Eco-rating||The AT&T Eco-Rating 2.0 system gives you environmental and social details about this device. The system uses a total of 20 performance criteria across 5 different attributes, for a total rating of 1 to 5 stars: 19-20 (5-star), 16-18 (4-star), 13-15 (3-star), 10-12 (2-star), 8-9 (1-star)|
|Substances of concern||4/4|
|Environmentally preferable materials||2/3|
|Energy efficiency and charging||1/1|
|End of life and recycling||2/2|
|Environmentally and socially responsible manufacturing||10/10|
|Total Eco-score||19/20 (5-star) Please visit www.att.com/ecospace for additional information|
1 Users should not interpret or take clinical action based on the device output without consultation of a qualified healthcare professional. Requires Samsung Galaxy smartphone with Android 7 or later.
©2021 Samsung Electronics America, Inc. Samsung and Galaxy are trademarks of Samsung Electronics Co., Ltd. Other marks are property of their respective owners. Device and applications are not intended for use in the diagnosis of disease or other conditions, or in the cure, mitigation, treatment or prevention of disease. See www.samsung.com.
2 AT&T NumberSync for Wearables: Requires smartphone on AT&T postpaid wireless account and set up for HD voice, and compatible wearable on eligible wireless plan. When calling from outside the AT&T-owned and operated domestic coverage area, the wearable number rather than smartphone number is shown in caller ID. Device Limits: Sync up to 5 wearables. Device selection limited. Voice Charges: Calls to international numbers using AT&T NumberSync are subject to international rates under your wearable's rate plan or international package. See att.com/international for information on pay-per-use rates and available packages for international calls from the U.S. and for roaming when traveling abroad. Data Charges: SMS and MMS messages sent and received through your wearable using AT&T NumberSync count as data, and data usage rates under your wearable's rate plan apply. MMS messages (group, picture, or video messages) cannot be sent or received via AT&T NumberSync to or from numbers outside the U.S., Puerto Rico, and the U.S. Virgin Islands. 911 Calls: 911 calls are not supported outside the U.S., Puerto Rico, and the U.S. Virgin Islands. Additional restrictions: Not compatible with Ringback Tones, Unified Messaging, OfficeDirect, or OfficeReach.
Limited 4G LTE availability. LTE is a trademark of ETSI.
All talk, data, and standby times depend on network configuration.