Macworld The TREBLAB HD77 Outdoor Rugged Wireless Speaker has a long-lasting battery, excellent sound quality, and a tough build. This portable speaker could be great for your next camping trip, and you can get one on sale for $59.99. This wireless speaker comes with DualBass and TWS (True Wireless Stereo) technology. It produces 360-degree sound coverage, and the 5,200mAh battery could last up to 20 hours, depending on your usage. The PlayXTend energy-saving feature could stretch this speaker’s battery to last even longer. The HD77 is durable. IT features an IPX6-rated waterproof design, whic…