Bose SoundLink Flex (Model 435910) – Portable Bluetooth Speaker, Sandstone White
 
Rugged and refined wireless speaker delivering deep, lifelike Bose sound in a compact form
The Bose SoundLink Flex delivers clear, powerful audio with balanced tones and rich bass in a grab-and-go size. Its PositionIQ™ technology automatically optimizes sound based on how it’s oriented—upright, hanging, or flat—so you get consistent performance anywhere. The silicone-coated exterior and powder-coated steel grille make it water-, dust-, and drop-resistant, perfect for home, travel, or outdoor use. Up to 12 hours of battery life and quick USB-C charging ensure all-day listening without interruption.
 
Condition:
Like-new condition with no visible wear or scratches. Fully tested and functions perfectly.
 
Includes:
Bose SoundLink Flex speaker (Sandstone White)
USB-C charging cable
Not included: original box or manual (downloadable via Bose Support)
 
Features:
PositionIQ automatic sound optimization
IP67 waterproof and dustproof rating (floats if dropped in water)
Bluetooth 5.1 connectivity up to 30 ft (9 m)
12-hour battery life; USB-C charging port
Built-in microphone for speakerphone calls and voice assistant access
Rugged silicone exterior and steel grille resist drops and corrosion
Multi-speaker Party Mode with the Bose Connect app
 
Frequently Asked Questions:
Q: Is this the first-generation SoundLink Flex?
A: Yes, Model 435910 is the original first-generation release.
Q: Can it float if dropped in water?
A: Yes, the IP67 design lets it float and continue playing.
Q: How long does it take to charge?
A: Around 4 hours for a full charge via USB-C.
Q: Can I pair it with another Bose speaker?
A: Yes, use the Bose Connect app for Party or Stereo Mode.