ACEFAST K4 Go Portable Wireless Speaker – 5W, IPX7, TWS, 8H Battery

ACEFAST K4 Go – Pocket-Sized Speaker with Big Sound & IPX7 Waterproofing

Don’t let the size fool you. The ACEFAST K4 Go packs 5W peak power, rich bass, and IPX7 full waterproofing into a 200g pocket-sized speaker that goes wherever you do. Hiking, camping, the beach, or your desk — clip it on with the built-in strap and enjoy 8 hours of uninterrupted music, rain or shine.

Key Features

•  5W Peak Power – Big Sound, Mini Size – Maximum 5W output with rich, powerful bass and outstanding vocal clarity. Impressive audio performance from a speaker that fits in your pocket.
•  Dual Acoustic Units – 45×45mm full-range speaker paired with a 35×60mm passive diaphragm for comprehensive, well-balanced sound across the full frequency range (60Hz–20kHz).
•  IPX7 Waterproof – Fully waterproof rated IPX7. Take it to the pool, beach, shower, or out in the rain without worry. Outdoor fun, fully protected.
•  TWS Stereo Pairing – Connect two K4 Go speakers wirelessly for an immersive stereo soundstage that fills any space.
•  Built-In Hanging Strap – Attach it to your backpack, bike, or tent. Prevents dropping and makes outdoor carrying effortless.
•  8-Hour Battery Life – 900mAh battery delivers up to 8 hours of continuous playback at 50% volume. Charges fully in just 1.5 hours via USB-C.
•  Bluetooth 5.4 – Stable, fast wireless connection up to 10m range. Minimal dropouts, maximum reliability.
•  All-Scenario Use – Home, office, hiking, camping, beach — the K4 Go is the one speaker that fits every moment of your day.

 Specifications

• Product Name: ACEFAST K4 Go Portable Wireless Speaker
• Bluetooth: v5.4 | Range: ≥10m
• Frequency Response: 60Hz – 20,000Hz
• Speaker Units: 45×45mm full-range + 35×60mm passive diaphragm
• Rated Power: 4W | Peak Power: 5W
• Battery: 900mAh / 3.7V | Playtime: ~8h | Charge time: ~1.5h
• Input: USB-C, DC 5V⌄0.86A
• Waterproof: IPX7
• Dimensions: 100 × 40 × 78 mm
• Weight: 200g

Small enough for your pocket. Tough enough for any adventure. The ACEFAST K4 Go — your sound, everywhere.