Plano Guide Series 3700 Field Box Waterproof Case - Tough Dry Storage

Our review of the Plano Guide Series 3700 Field Box finds it is a practical waterproof storage solution for anglers, paddlers, and campers who need to keep phones, wallets, and small gear dry on the water. The strongest reason to buy is its Dri-Loc O-Ring seal and cam action latches that make the case fully submersible to 1 meter for up to 30 minutes, providing true peace of mind when a splash or brief dunk is a real risk. The compact design with interior slip-resistant pads and a wrist strap also keeps fragile items from shifting during rough movement.

Key Features

• Dri-Loc O-Ring Seal: Creates an airtight, watertight barrier so contents stay dry even if the case is briefly submerged.
• Fully Submersible: Rated to 1 meter for up to 30 minutes, which protects valuables during accidental drops or heavy spray.
• Durable Construction: Made from impact-resistant polycarbonate so the box resists crushing and stands up to outdoor use.
• Secure Cam Latches: Three heavy duty cam action clasps hold the lid tightly closed to prevent water intrusion under moving conditions.
• Interior Protection: Slip-resistant rubber pads keep phones, keys, and small electronics from shifting and reduce the chance of damage.
• Convenient Carry: Wrist strap and a compact footprint make it easy to bring along on a kayak, boat, or camping pack.

Who It's For

The Plano Guide Series 3700 Field Box is ideal for anglers, kayakers, and boaters who need a reliable dry box to protect small valuables on short outings or day trips. Its submersion rating and sturdy clasps make it especially useful when paddling or working near choppy water where splashes and drops are likely.

People who need storage for larger electronics, long-term waterproofing for gear beyond brief submersion, or internal organization for many small tackle items should consider a larger dry case or a purpose-built waterproof pack instead.

Pros & Cons

Pros

• Effective watertight seal thanks to the Dri-Loc O-Ring, giving confidence during short submersions.
• Sturdy polycarbonate construction that resists impact and crushing in outdoor conditions.
• Interior slip-resistant pads and wrist strap keep fragile items secure and easy to carry.
• Three cam action latches provide a reliable closure under movement and spray.

Cons

• Designed for small valuables only, so it is not suitable for larger electronics or bulk storage needs.
• Submersion protection is limited to 1 meter for 30 minutes, so it is not intended for extended underwater use.

Specifications

Brand	Plano
Model	Guide Series 3700 Field Box
Waterproof Rating	Fully submersible to 1 m for 30 minutes
Seal Type	Dri-Loc O-Ring seal
Closure	Three cam action latches
Material	Impact-resistant, crush proof polycarbonate
Includes	Wrist strap and interior slip-resistant rubber pads

Our Verdict

The Plano Guide Series 3700 Field Box is a compact, well-built waterproof case best for anglers, kayakers, and campers who need to protect small valuables from splashes and brief submersion. Its combination of a Dri-Loc O-Ring seal, strong cam latches, and interior padding offers sensible protection at modest cost, making it a good value for day trips and water-based activities.

Frequently Asked Questions

Can this case keep a phone dry if dropped overboard?
The case is rated fully submersible to 1 m for up to 30 minutes, so it will protect a phone from brief drops and splashes but is not intended for extended underwater use.

Is the interior padded to prevent scratches?
Yes, the interior includes slip-resistant rubber pads that secure fragile items and help prevent them from sliding and scratching during transport.

Will it withstand being crushed in a packed bag?
The impact-resistant, crush proof polycarbonate construction offers good protection against typical crushing forces, but very heavy compression from larger gear could still cause damage.