NDR-822 Bluetooth Party Speaker
Price in Sri Lanka

The NDR-822 is a dual 8-inch trolley-style Bluetooth speaker sold under the NDR brand (manufactured by Guangzhou Ningda Electronics) and listed by resellers both as a party speaker and as a karaoke speaker. It pairs two 8-inch woofers with a high-pitch driver for a combined 40 watts RMS output, powered by a 7.4V/5400mAh rechargeable battery.

It supports Bluetooth, USB and TF-card playback plus FM radio, and can be paired with a second unit over TWS. Listings for this model ship with a wireless microphone, a remote control and a power adapter for karaoke use, and include built-in LED party lighting.

Resellers list an approximate playtime of 4-6 hours depending on volume; no water-resistance rating is stated for this model by any source checked. Some listings for what appears to be a different, single-woofer NDR-822 variant advertise higher output power (50-100W) and a vague "waterproof" claim with no IP code, but those do not match this group's dual 8-inch configuration and were not used.