The Philips Sonicare 4100 Series (HX3689/41) electric toothbrush delivers a deep yet gentle clean that removes up to 7× more plaque than a manual toothbrush. Designed with Sonicare’s advanced sonic technology , it drives fluid between teeth and along the gumline for superior cleaning and healthier gums. Featuring Smart Sensor technology , a built-in pressure sensor , and a 2-minute SmarTimer , the Philips Sonicare 4100 ensures you brush effectively and safely every time. With a sleek, ergonomic design and long-lasting battery life, it’s the perfect upgrade for better oral hygiene. Removes up to 7× more plaque than a manual toothbrush for improved oral health. Sonic cleaning technology – delivers up to 62,000 brush movements per minute for a deep yet gentle clean. Built-in pressure sensor – alerts you if you brush too hard to protect your gums and enamel. 2-minute SmarTimer & QuadPacer – encourages optimal brushing time and even cleaning across all areas of the mouth. Slim, lightweight design – comfortable to hold and easy to use, even for first-time electric toothbrush users. Long-lasting battery life – up to 2 weeks of use on a single charge. Easy-start program – gradually increases power over the first 14 uses for a comfortable transition from manual brushing. BrushSync™ reminder – notifies you when it’s time to replace the brush head for consistent performance. Travel-friendly – compact and durable, perfect for home or travel use. The Philips Sonicare 4100 HX3689/41 combines advanced sonic cleaning power, intelligent protection features, and comfort-focused design to make every brushing session effective and effortless. Specification Details Model Philips Sonicare 4100 Series HX3689/41 Technology Sonicare Sonic Cleaning Movements per Minute Up to 62,000 Cleaning Modes 1 (Clean) Pressure Sensor Yes (Vibration Feedback) Timers SmarTimer (2 min) + QuadPacer Battery Type Rechargeable Lithium-Ion Battery Life Up to 14 Days per Charge Charging Time Approx. 24 Hours Brush Head Compatibility All Philips Sonicare Snap-On Heads BrushSync™ Technology Yes (Brush Head Replacement Reminder) Easy-Start Function Yes Handle Design Slim Ergonomic Handle Included in Box 1 × Handle, 1 × Brush Head, 1 × USB Charging Base Colour White with Mint Accents