For Samsung Galaxy Watch3 Watch4 Active2 Magnetic Wireless Cradle charger Smart Watch 3 4 Active 2 Charge Dock USB Charging Base 1m Length Applicable Models: Samsung Galaxy Watch 4 (40mm SM-R860)Samsung Galaxy Watch 4 (44mm SM-R870）Samsung Galaxy Watch 4 classic(42mm SM-R880)Samsung Galaxy Watch 4 classic(46mm SM-R890）Samsung Galaxy Watch 3 (41mm SM-R850)Samsung Galaxy Watch 3 (45mm SM-R840)Samsung Galaxy Watch Active 1（40mm SM-R500）Samsung Galaxy Watch Active 2（40mm SM-R830）Samsung Galaxy Watch Active 2（44mm SM-R820) Features: 1. Perfect fit for Samsung Models Listed.2. Output short circuit protection, Overvoltage and overload filtration protection.3. Good anti-interference performance.4. Compact and Portable design, great for travelers and business users. Specification: Input: 5V/1.0AOutput: 5V/0.5ASize: 33.7mm(diameter) 9mm(thickness)Material: ABS TPECable Length: Approx. 100CMColor: Black Note: Charging Cradle only, not with the Watch.Please allow 1-3mm difference due to manual measurement.