SJGAM M21
Reference Price
€34.45
$40 USD
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SJGAM M21 is a gaming handheld launched in 2024. Powered by H133 (4-core, 1.8 GHz), 1 GB RAM. Features a 3.5" display (640 x 480). 3000 mAh battery. Runs Linux.
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Preloaded Content Notice
This device may ship with preloaded ROMs or sample game files. Under U.S. copyright law (DMCA Section 1201 and 17 U.S.C. § 117), creating or distributing ROMs of copyrighted games without authorization is generally prohibited. Personal backup copies of games you legally own may fall under fair use exceptions — consult an attorney for specifics.
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SJGAM M21 is a gaming handheld launched in 2024. Powered by H133 (4-core, 1.8 GHz), 1 GB RAM. Features a 3.5" display (640 x 480). 3000 mAh battery. Runs Linux.
The platform list is impressively broad, ranging from the Atari 2600, NES, Game Boy and Sega Genesis to the SNES, Game Boy Advance, PlayStation, Nintendo DS, Nintendo 64, Sega Saturn, Dreamcast and PlayStation Portable, plus MAME, Final Burn Neo, ScummVM and OpenBOR. Given the modest hardware, its real strength is classic 8- and 16-bit emulation and PlayStation titles, while the more demanding systems call for realistic expectations.
The 3.5-inch TFT screen offers a 640 x 480 resolution, a 4:3 aspect ratio, roughly 229 PPI and a 60 Hz refresh rate. The 4:3 format is a natural match for most retro consoles, and a tempered glass lens adds extra protection.
On the controls side, the M21 provides an upper-placed cross D-pad, four face buttons, symmetric dual thumbsticks with L3/R3 and a full set of horizontal L1, R1, L2 and R2 shoulder buttons. Volume has dedicated buttons, power is handled by a switch, and the plastic body weighs 208 g. There is no rumble.
The 3000 mAh battery charges over USB-C. A USB-C OTG port, Mini HDMI output for TV play and a 3.5mm headphone jack round out connectivity, while audio comes from a single front-facing mono speaker. Storage is handled via microSD.
The console runs Linux and supports EmuELEC as an alternative system, and its modding policy is permissive, leaving room for customization.
Ideal for: players who want a very low-cost vertical retro handheld with dual sticks and video output for classic games up to PlayStation.
- Manufacturer
- Allwinner
- SoC
- "N909"
- Model
- H133
- Architecture
- Cortex-A7
- Cores
- 4
- Threads
- 4
- Frequency
- 1.2 - 1.8 GHz
- Instruction Set
- ARM
- Chipset
- Mali-400 MP2
- GPU Cores
- 2
- GPU Frequency
- 500 MHz
- Capacity
- 1 GB
- Technology
- DDR4
- Size
- 3.5
- Technology
- TFT
- Resolution
- 640 x 480
- Refresh Rate
- 60 Hz
- Pixel Density (PPI)
- 228.57
- Aspect Ratio
- 4:3
- Lens
- Tempered Glass
- Capacity
- 3000 mAh
- Analog Sticks
- Dual thumbsticks with L3/R3
- Stick Placement
- Symmetric
- D-Pad
- Cross
- D-Pad Placement
- Upper
- Shoulder Buttons
- L1, R1, L2, R2, Shelf
- Shoulder Orientation
- Horizontal
- Extra Buttons
- Menu, Power, Volume +-
- Speaker Type
- Single Mono
- Speaker Position
- Front facing
- Ports
- USB-C OTG
- Charge Port
- USB-C
- Video Output
- Mini HDMI
- Audio Output
- 3.5mm Headphone
- Audio Output Placement
- Bottom facing
- Card Support
- microSD
- Operating System
- Linux
- Custom OS Support
- EmuELEC
- Weight
- 208 g
- Body Material
- Plastic
Modding officially supported
The manufacturer officially permits or encourages modding (custom firmware, OS replacement, hardware modifications). Warranty remains valid under normal use.
Arcade · 4 platforms
Atari · 5 platforms
Bandai · 2 platforms
Coleco · 1 platform
Epoch · 1 platform
Fairchild · 1 platform
Magnavox · 1 platform
Mattel · 1 platform
NEC · 4 platforms
Nintendo · 12 platforms
Other · 4 platforms
Philips · 1 platform
SNK · 2 platforms
Sega · 9 platforms
Sony · 2 platforms
Watara · 1 platform
Welback · 2 platforms
Pros & Cons
Pros
- very low price
- dual analog sticks with L3/R3
- mini HDMI video output
- 4:3 640x480 screen
- full L1/R1/L2/R2 shoulder buttons
- EmuELEC support
Cons
- modest Cortex-A7 CPU
- only 1 GB RAM
- mono speaker
- no rumble
- plastic body
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Compliance & Safety
SJGAM M21 — 5 marks declared by manufacturer
Regulatory
· 1-
CE Marking
EUConformité Européenne — certifies that the product meets essential EU requirements for safety, health and environmental protection. The mark indicates the manufacturer has assessed the product and confirmed compliance with applicable European legislation (EMC, RoHS, RED directives, etc.). Mandatory for all electronic products sold in the European Economic Area since 1985.
Official source
Environmental
· 2-
RoHS
GlobalRestriction of Hazardous Substances — EU directive limiting 10 hazardous substances in electronics (lead, mercury, cadmium, hexavalent chromium, phthalates, etc.). Limit: 0.1% per substance (0.01% for cadmium). RoHS compliance is part of the CE declaration and mandatory for all electronics sold in the EU.
Official source -
WEEE
EUWaste Electrical and Electronic Equipment — the crossed-out wheeled bin pictogram indicates the obligation to separate electronic waste from household trash. Manufacturers must register with a national collection scheme and cover recycling costs. Consumers can return used devices free of charge at stores or collection centers.
Official source
Safety
· 2-
Not for children under 3
EUSafety warning per Toy Safety Directive 2009/48/EC — product not suitable for children under 3 years due to small parts presenting choking hazard. Applicable to consoles with small detachable accessories (joycons, batteries, short cables). Manufacturer sets the age limit based on safety testing.
Official source -
Electric Hazard
GlobalElectric hazard warning per ISO 7010 — the pictogram indicates the presence of high-voltage components inside. Disassembling without qualified personnel can cause severe electric shock, even after disconnecting from mains (capacitors may retain charge for a long time). DO NOT disassemble unless you are an authorized technician.
Official source
Markings displayed are based on data declared by the manufacturer. Actual product markings may vary by region and revision.
