BOOSTER X is the most popular model with all the needed features. 
X provides 5 speed levels for helping relieve muscle soreness and stiffness / Improves range of motion / Promotes circulation / Accelerates warm up and recovery. It is a sleek, ergonomic, and portable massage hammer tool.
With at least 2-3 hours of continuous use (other massagers last from 20-40 minutes) and multiple heads. 
You can always get to those hard-to-reach places. It’s perfect if you enjoy sports, training, CrossFit, or any other sports. It’s ideal for pro and elite athletes as well as for casual use. It is quiet...Whisper quiet when compared to other massage guns. No obnoxious power tool hammering sound - only lightweight quiet muscle and joint relief. Reduced pain, improved flexibility, injury prevention, enhanced recovery can all be yours in one simple solution
 
5 Vibration Speed settings: 
The personalized and adjustable speed settings makes the massager
easy and comfortable to use; adjust the frequencies according to the purpose, for warming up, 
soreness relief, injured muscles, muscle pain and activation, tightness relief; increase to higher speeds
for larger and stronger muscle groups.
 
Noise Reduction Technology: 
Powerful high-torque motor featuring New Noise Reduction technology. 
Operating noise level at 55db which is much quiet than other jigsaw modified massage gun in the 
market. Superlight weight, high quality designed, and easier to use. The ergonomic designed grip 
minimizes external vibrations and the durable TPE grip makes the massager easier and comfortable to
hold and operate.
 
4 Massage Heads:
The handheld massager comes with 4 massage heads for a different massage experience. 
With scientific vibration frequency and amplitude, the massager would effectively relieve muscle spasm 
and stimulate blood flow, and greatly shorten muscle recovery time.
 
Long Battery Running Time: 
16V 2600mAh Li-ion Battery and comes with an excellent long-run battery that can work 2-3 hours after each charging, depending on the massage feature you use.
Food Grade Silicone Protective Cover which brings fine & smooth gripping touch and prevent slips and 
falls from hand. 
 
Technical Specs:
Battery: 16V 2600mAh Li-ion Battery
Operating time: 2-3 hrs after each full charge
Stroke: 12mm
No-load speed: 1200-360/min max
Speed: 1-5 levels
Weight: 920g
Size: 290 x 275 x 90mm
 
Your Booster X package comes with:
1 x Massage gun and power adapter
4 x Different Massage heads attachment
1 x Instruction manual
1 x year warranty 
X is packed in Booster original gift box set individually. 
 
Using Booster X you get better hydrated and looser muscles ,which enables them to move past one another with less friction. This means that during a workout, muscles are less likely to be pulled or damaged. 
Booster X is an effective way to draw blood to any injured area and to decrease recovery time between workouts. Due to these characteristics X not only serves athletes but also helps professional people to take care of day to day pains that comes with sitting at the desk for 8+ hours. 
Note：Avoid using the time for more than 30 minutes, let the massage gun turn off for 5 minutes before continuing to use.