The M4 is the newest wireless speaker by GGMM. If you're into high fashion speakers, check out the newest M4 by GGMM that allows up to 16 devices to be connected simultaneously. by Adam Molina March 23, 2015. 1 Enjoy your music virtually anywhere with the GGMM M4 WiFi Wireless Bluetooth Speakers. They come with a built-in rechargeable battery. There is a durable microfiber wrapped around the entire speaker that includes a stylish leather belt you can use over the shoulder or as a hand-carry. Along with GGMM M4: Leather Portable Wireless Audiophile WiFi & Bluetooth Multi-Room Stereo Speaker With Built In Wolfson DAC and Kevlar Speakers) GGMM R 3,990 00 R 3,990.00 Colt Expanse M4 Carbine Review - Range Test Colt Expanse M4 Carbine Review & Range Test. By Mike Searson Colt Expanse M4 Carbine, model CE2000, represent a bargain for the first time AR shooter looking for an out of the box ready AR15 rifle. GGMM, Inc. 19K likes. Now Live on Kickstarter: The beautifully designed and compact Hi-Fi speaker with massive power, alarm clock and charger. Free delivery and returns on eligible orders. Buy GGMM Airplay Wireless Speaker, Wifi Home Portable Bluetooth Speaker, Outdoor Powerful Sound, DLNA Bluetooth Spotify iHeartRadio TuneIn, M4 at Amazon UK. 3. GGMM M4 Leather Wireless: GGMM M4 wireless speaker is a great option for the ones that need something portable that also sounds great. It is a product that comes with a premium look due to the fact that it comes covered in leather. The model supports AirPlay technology over Wi-Fi and Bluetooth. I already bought two speakers from this company (GGMM) and have been very happy with the quality and performance of their speakers. So I decided to get their top of the line, the M4. Unlike the E5 speaker, the M4 is designed with a focus on music quality rather than portability. Prior to jumping in the review of GGMM E5 and GGMM E3 wireless smart speakers, I feel that bringing them into perspective is needed. Reg