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Bitdeer SealMiner A3 Pro Air (290TH)

Model: SealMiner A3 Pro Air

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290 TH/s air-cooled SHA-256 miner at 3,625W from Bitdeer's SealMiner series. Strong efficiency in a compact 15.5 kg build. Includes PSU, warranty, and free DDP shipping from MillionMiner.

290 TH/s 3625W SHA-256 12.5 J/TH

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Quantity

Total Price

$4,490.00

Buying 10 or more? Get custom bulk pricing

Pay with: Bank Transfer | BTC | ETH | USDT

Genuine

Tested hardware

Worldwide

Global shipping

Support

Mining experts

Hashrate

290 TH/s

Power

3625 W

Efficiency

12.50 J/TH

Noise

75 dB

Estimated Mining Returns

Based on current BTC price & network difficulty. Indicative only.

Period Daily Weekly Monthly
Income
$12.35 $86.45 $370.50
Electricity
-$6.96 -$48.72 -$208.80
Profit
$5.39 $37.73 $161.70

Using 0.080 $/kWh · Network difficulty as of today. Estimates only.

Adjust rate in the bar above

Updated daily. Last refresh: Apr 21, 2026. Estimates at $0.08/kWh.

Full Specifications

Hashrate 290 TH/s
Power Consumption 3625 W
Efficiency 12.50 J/TH
Algorithm SHA-256
Model SealMiner A3 Pro Air
Release Year Oct 2025
Noise Level 75 dB
Dimensions 365 x 292 x 197mm
Weight 15 g
Voltage 220-277v
Interfaces Ethernet
Operating Temp -20-45°C
Humidity 10-90%
Cooling Type Air

What's in the Box

SealMiner A3 Pro Air
Power supply unit (PSU)
Power cables
Quick start guide

Contents may vary by batch. Exact items listed in order confirmation.

Quick Setup

1

Connect PSU to miner and plug into the outlet

2

Connect ethernet cable to your router or switch

3

Find miner IP via router admin or IP scanner tool

4

Open web interface, enter pool URL and wallet — start mining

Product Details

Bitdeer SealMiner A3 Pro Air 290 TH/s Air Cooled SHA 256 Bitcoin Miner on SEAL02 Chip

The Bitdeer SealMiner A3 Pro Air produces 290 TH/s at 3,625W on SEAL02 proprietary chip. 12.5 J/TH efficiency. Bitdeer designs its own ASIC silicon under the SEAL program and also operates large scale mining farms, making them one of few companies that both build the hardware and run it in production.

The A3 Pro Air competes directly with the Canaan Avalon A16XP (300 TH/s at 12.8 J/TH). The A16XP produces 10 TH/s more at slightly less efficient J/TH. The A3 Pro Air is 0.3 J/TH better in raw efficiency. Pricing and availability at the time of purchase determine which model offers better value.

The notable specification is the operating temperature range: minus 20 to 45 degrees Celsius. Most air cooled Bitcoin miners start at 0 or 5 degrees. The A3 Pro Air can run outdoors in sub zero winter conditions without intake air heating. For container deployments in Canada, Russia, Nordic countries, or any cold climate region, this wider range avoids the cost and complexity of heating systems during winter months.

SEAL02 is the second generation of Bitdeer's in house chip, following the SEAL01 used in the A2 series. Bitdeer's vertical integration (chip design, hardware manufacturing, mining operations) gives them a different optimization lens than pure hardware vendors. Their products reflect real operational data from their own mining farms.

220 to 277V at 75 dB. 365 x 292 x 197mm at 15.5 kg. Ethernet connectivity. 10 to 90 percent humidity. Mines Bitcoin, Bitcoin Cash, and all SHA 256 proof of work coins.

SealMiner A3 Pro Air 290 TH/s Bitcoin Miner on Bitdeer SEAL02 Chip

Bitdeer SealMiner A3 Pro Air. 290 TH/s at 12.5 J/TH on SEAL02 proprietary chip. Bitdeer's top air cooled Bitcoin miner from a company that both designs ASICs and operates mining farms at scale.

Competes with the Canaan A16XP (300 TH/s, 12.8 J/TH). The A3 Pro Air is 0.3 J/TH more efficient. The A16XP has 10 TH/s more hashrate. Compare current pricing for value.

Minus 20 to 45 degree operating range is the widest cold tolerance in current air cooled Bitcoin miners. Container and outdoor deployments in sub zero climates operate through winter without intake heating. 3,625W at 220 to 277V. 75 dB. 15.5 kg at 365 x 292 x 197mm. Ethernet. Bitcoin, Bitcoin Cash, all SHA 256 coins.

The minus 20 degree floor gives the A3 Pro Air a deployment envelope that most competitors cannot match. Combine this with Bitdeer's operational DNA (they run their own farms in diverse climates) and the A3 Pro Air reflects hardware designed for real world conditions, not just lab specs.

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SealMiner A3 Pro Air 290 TH/s SHA 256 Bitcoin Miner

Industrial 290 TH/s SHA-256 at 3625W. 290 TH/s SHA 256 at 12.5 J/TH on SEAL02 chip. Minus 20 to 45 degree operating range for cold climate container mining. 3,625W at 220 to 277V. 75 dB. 15.5 kg. Competes with the Canaan A16XP on efficiency. Bitdeer designs chips and operates mining farms. Ethernet. Bitcoin, Bitcoin Cash, all SHA 256 coins. 365 x 292 x 197mm. 10 to 90 percent humidity. Widest cold floor in current air cooled Bitcoin miners.

290TH Bitdeer Engineering

Built by a company that runs mining at massive scale. The A3 Pro Air reflects operational experience from one of the world's largest hosting platforms.

Compact, Cold-Weather Capable

15.5 kg with an operating range from minus 20 to 45 degrees Celsius. Deploys in more environments than most competitors.

Early Allocation from MillionMiner

MillionMiner secured early units from Bitdeer's production queue. Ships with PSU, warranty, and free DDP delivery worldwide.

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FAQ

Frequently Asked Questions

290 TH/s SHA-256 at 3,625W with 12.5 J/TH. Bitdeer Sealminer — competitive with Antminer S21 XP (13.5 J/TH).

A3 Pro Air: 290 TH/s at 12.5 J/TH. S21 XP: 270 TH/s at 13.5 J/TH. The Bitdeer is 7% more efficient and 7% more hashrate. Strong competitor.

NASDAQ-listed Bitcoin mining company (BTDR) manufacturing its own Sealminer ASIC hardware.

Yes. Free DDP shipping. Genuine Bitdeer hardware.