Grayten GT688 Max Portable Modem

GT688 Max – Product Overview

The GT688 Max is a high-performance mobile Wi-Fi modem from Grayten, engineered to deliver reliable ultra-fast internet connectivity for on-the-move use, remote work setups, and dynamic home environments. With advanced modem and Wi-Fi technologies built in, it provides strong signal coverage, seamless multi-device support and smooth performance wherever you go.

Key Features

• Supports 4.5G LTE Cat6 (with fallback to 3G/WCDMA) delivering speeds up to 300 Mbps download and 50 Mbps upload.

• Equipped with Wi-Fi 6 (802.11 a/b/g/n/ac/ax) on dual-band 2.4 GHz + 5 GHz, allowing up to 32 devices connected simultaneously.

• Compact, portable design with intuitive display and easy setup — ideal for travel, shared homes or mobile offices.

• Powered by a 6400 mAh lithium-ion battery that also functions as a power bank (OTG 6 W) for other devices.

• Connectivity versatility: LAN RJ 45 (100 Mbps) port + USB Type-C for charging and tethering.

• Enhanced network management: supports guests, device control, usage monitoring; network security features including WEP / WPA2 / WPA3, IP/Port/URL filtering, DMZ, DDNS.

Technical Highlights

Built to deliver steady performance even in demanding scenarios, the GT688 Max features:

• Chipset ASR1828 with Cortex-A7 1.5 GHz (22 nm process) for efficient network handling.

• Internal Wi-Fi antennas plus two external MCX ports for LTE signal enhancement.

• A colour 0.96″ LCD shows network status and battery levels at a glance.

• Dimensions of 112.2 × 70 × 22.8 mm and robust ABS+PC body, designed to perform from –10 °C to 60 °C.

• Firmware update and TR-069 support for ongoing software maintenance and network optimisation.

Why Choose GT688 Max?

If you’re looking to break free from traditional router constraints and stay connected beyond your home office—whether in shared accommodations, mobile work-environments, travel scenarios or outdoors—the GT688 Max offers:

• Mobility: deliver fast, stable internet in places where fixed routers can’t reach.

• Capacity: support for many simultaneous devices, making it ideal for families, teams and shared spaces.

• Future-ready speed: With LTE Cat6 and Wi-Fi 6 you’re prepared for next-generation network demands.

• Dual-functionality: Not just a modem — a portable power bank when you’re on the move.