Acefast K4 Go Wireless Portable Speaker (model K4GO-LS) is designed for portable wireless music in multiple settings, including home, hiking, camping, and office. With Bluetooth version v5.4, it supports wireless connectivity and is built for outdoor use with an IPX7 waterproof rating. It also features a built-in hanging strap to support convenient carrying during travel. For audio performance, the speaker includes a 1 full-range speaker unit and 1 passive diaphragm, with a stated frequency response range of 60Hz-20000Hz. The unit supports TWS interconnection, enabling TWS pairing for immersive stereo sound. Battery specifications are listed as 900mAh / 3.7V, with a charging time of 1.5 hours and a working time of 8 hours in music mode.
Key Features
• Supports TWS interconnection
• Built-in hanging strap for convenient outdoor travel
• IPX7 waterproof
• Home, hiking, camping, office use scenarios
• Supports TWS pairing for immersive stereo sound
• Portable strap
Specifications
• Product name: ACEFAST K4 Go portable wireless speaker
• BT version: v5.4
• Transmission distance: ≥10m
• Frequency response: 60Hz-20000Hz
• Charging time: 1.5 hours
• Working time: 8 hours (music mode)
• Note: All measures are made under 50% volume level
• Speaker unit: 1 speaker unit + 1 diaphragm
• Speaker unit details: 1 full-range speaker unit [45×45mm]
• Passive diaphragm: 1 passive diaphragm [35×60mm]
• Waterproof rating: IPX7
• Power: 5W power
• Speaker power: Rated power 1×4W
• Speaker power: Peak power 1×5W
• Battery capacity: 900mAh / 3.7V
• Input: DC 5V⎓0.86A (USB-C)
• Size: 100*40*78mm
• Weight: 200g
• Lightweight and portable; mini size weighing 200 grams