ACEFAST K4 Go Waterproof Portable Bluetooth Speaker
ACEFAST K4 Go Waterproof Portable Bluetooth Speaker
ACEFAST K4 Go Waterproof Portable Bluetooth Speaker
ACEFAST K4 Go Waterproof Portable Bluetooth Speaker
ACEFAST K4 Go Waterproof Portable Bluetooth Speaker
ACEFAST K4 Go Waterproof Portable Bluetooth Speaker

ACEFAST K4 Go Waterproof Portable Bluetooth Speaker

$41.99 $55.99
-25%
In stock

Estimated delivery between November 23 and November 28.

ACEFAST K4 Go Waterproof Portable Bluetooth Speaker

14-Day Returns

Unhappy with your order? Return within 14 days of delivery.
ACEFAST K4 Go Waterproof Portable Bluetooth Speaker

Risk-Free Purchase for Defective or Lost Items

Damaged, defective, or lost items are covered with a full refund.

Shipping & Delivery

Shop with confidence — every order is fully protected from checkout to delivery.

  • Delivery Time: Most orders arrive within 5–10 business days.
  • Processing: Orders are checked and packed within 1–4 business days.
  • Flat Shipping: One rate for all sizes and quantities.
  • Pricing: Prices include all applicable taxes. International orders may incur local duties; we notify you in advance.
  • Delivery Protection: Lost or delayed shipments are fully covered.
  • Extended Delay Coverage: In very rare cases — such as unexpected carrier delays or technical issues — if your package has not moved or arrived after 30 days and the carrier has not reported it as lost, we will automatically consider it lost and issue a full refund.
  • Tracking: Real-time tracking is available for all shipments.
  • Address Updates: Contact us before dispatch if you need to update your shipping address.
  • Support: Email us at help@devicean.com. If we can't respond immediately, we will get back to you as soon as possible.

Read full Shipping & Delivery Policy

Returns & Refunds

We’re confident you’ll love your purchase — but if something isn’t right, we’ll make it right.

  • Return Window: 14 calendar days from delivery for any reason (dissatisfaction, defect, or damage).
  • Free Returns for Our Error: Defective, damaged, or incorrect items — return shipping is free.
  • Change of Mind: Return allowed, but shipping is paid by the customer.
  • Fast Refunds: Issued within 3–5 business days after your return is received and inspected.
  • Easy 3-Step Process: Submit return request → Receive instructions → Send & Refund.
  • Happiness Guarantee: Even after the return window, contact us for replacements, partial credits, or alternative solutions.
  • Support: Email us at help@devicean.com. If we can't respond immediately, we’ll get back to you as soon as possible.

Read full Returns & Happiness Guarantee Policy
ACEFAST K4 Go Waterproof Portable Bluetooth Speaker
$41.99 $55.99
$41.99 $55.99

Product Details

The ACEFAST K4 Go Waterproof Portable Bluetooth Speaker delivers clear, full-range sound in a compact, rugged design. Perfect for outdoor adventures or home use, it keeps your music playing with reliable Bluetooth connectivity and durable, waterproof construction.

Compact, Durable Sound for Every Adventure

  • Waterproof IPX7 Rating: Enjoy music worry-free near water, rain, or pools without damage.
  • Full-Range Audio: 45 × 45 mm speaker unit produces clear sound across lows, mids, and highs for immersive listening.
  • Bluetooth 5.4 Connectivity: Ensures stable wireless connection up to 32.8 ft (10 m) for effortless pairing with devices.
  • Long Playback Time: Up to 8 hours of continuous music on a single 900 mAh charge for extended enjoyment.
  • Compact and Lightweight: Measures just 3.94 × 1.57 × 3.07 in (100 × 40 × 78 mm) and weighs 0.44 lbs (200 g), easy to carry anywhere.

Portable Speaker That Keeps Up with Your Lifestyle

Designed for mobility, the K4 Go fits in backpacks, bags, or even your hand, making it perfect for trips, workouts, or casual listening. Its IPX7 waterproof rating ensures you can use it by the pool or in light rain without concern.

The full-range 45 × 45 mm speaker delivers 5 W of output, balancing bass and treble for crisp, natural sound. SBC and AAC codec support enhances audio quality across compatible devices.

With Bluetooth 5.4, pairing is fast and reliable, and the wireless range of 32.8 ft (10 m) allows freedom of movement without interruption. USB charging fully powers the 900 mAh battery in just 1.5 hours.

Its sturdy plastic and mesh construction ensures durability while remaining lightweight, combining portability with resilience for everyday adventures.

Reliable Sound Anytime, Anywhere

The ACEFAST K4 Go speaker offers compact, waterproof, and high-quality audio, making it an ideal companion for outdoor activities or home enjoyment. It’s a versatile speaker built for convenience, durability, and continuous entertainment.

Technical Specifications

Specification Details
Brand ACEFAST
Model K4 Go
Product Type Portable Wireless Speaker
Material Plastic, Mesh
Dimensions 100 × 40 × 78 mm (3.94 × 1.57 × 3.07 in)
Weight 200 g (0.44 lbs)
Audio Crossover Full-Range
Speaker Unit 45 × 45 mm (1.77 × 1.77 in) Full-Range ×1
Output Power 5 W
Frequency Range 65 Hz – 20 kHz
Channels 1
Codecs Supported SBC, AAC
Bluetooth Version 5.4
Maximum Wireless Range <10 m (32.8 ft)
Battery Capacity 900 mAh
Charging Time 1.5 hours
Playback Time Up to 8 hours
Input Power <25 W
Waterproof Rating IPX7