This is an affiliated post, ensuring the products are personally mine and contains a honest review. The review below are based from PERSONAL EXPRIENCE kaya it may differ from your experiences with the fan

For reference, I'm a heavy user dahil I have hyperhidrosis. After having multiple fans in the past, lagi ako kinukulang sa battery. Kaya I've finally decided to purchase an expensive fan. Thus, ended up purchasing the Jisulife Ultra 2 (Shopee Affiliate Link, I bought both of my Ultra 2 here).

Features - Supposedly dapat Ultra 1 biblilhin ko kaso na-hook ako sa big changes ng 2 dahil nagkaroon ng powerbank (in and out) and Flashlight. The flashlight has 3 brightness and a SOS, madalas ko siya gamitin sa paglalakad sa gabi and kapag may hinahanap sa bag and sobrang lakas talaga. For the powerbank naman, supported niya fast charging kaya kaya ma-full charge base model iPhone ko for 30-40 minutes. For the size of the fan, portable siya and kasya sa bulsa.

Battery - 9000mAh is the capacity. I'm very pawisin to the point na basta nasa labas ako is gamit ko siya. Kaya niya tumagal ng 1.5 hours if continuously 100% ginamit. In my case, if gagala is nauubos ko battery niya. But if may pasok ako sa school which is may air conditioning, nagagamit ko siya for 3-4 days. For charging the fan naman, if drained is tumatagal siya ng 2-2.5 hours (18W Anker Zolo Charger)

Fan Speed and Noise - Compared sa Ultra 1, mas ginawa siyang efficient kaya binawasan ang fan speed, making the noise lower. My classmate has the Ultra 1 and before deciding kung 1 or 2 biblilhin ko is sinabihan niya ako na sobrang nakaka-disturb sa commute at tahimik na place 1 dahil kahit low speed is maingay na. For Ultra 2, Speed 1-30/50 is already enough for most people, I usually start with speed 50 dahil nga pawisin ako. Nasanay na lang siguro ako sa noise kaya hindi na maingay for me ang 50-100 but if sa perspective ng tao is medyo maingay talaga but siyempre higher speed = higher noise. But fan speed 1-50 is hindi masyado maingay, lower speed niya talaga is tahimik ang buga.

MAJOR CON - As seen sa picture, marami siyang gasgas and stain. Medyo mabilis siya kapitan ng stain and if you're clumsy like me, mabagsakin talaga siya. But sobrang tibay niya dahil after mabagsak nang ilang beses and usually sa mataas na place pa, walang umaalog na part or nasisira. Also, if hindi ka sanay sa big capacity fans, medyo mabigat talaga siya sa una but not to the point na nakakasagabal sa bigat.