Photo 1 of SportDOG FieldSentinel 825 Remote Trainer with Bodyguard Health Alerts - Monitor Heart Rate & Exertion - Half-Mile Range Trainer - Static, Tone, & Vibration Modes

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Photo 1 of SportDOG FieldSentinel 825 Remote Trainer with Bodyguard Health Alerts - Monitor Heart Rate & Exertion - Half-Mile Range Trainer - Static, Tone, & Vibration ModesPhoto 2 of SportDOG FieldSentinel 825 Remote Trainer with Bodyguard Health Alerts - Monitor Heart Rate & Exertion - Half-Mile Range Trainer - Static, Tone, & Vibration ModesPhoto 3 of SportDOG FieldSentinel 825 Remote Trainer with Bodyguard Health Alerts - Monitor Heart Rate & Exertion - Half-Mile Range Trainer - Static, Tone, & Vibration Modes